fix(input): camel-case md-prefix and md-suffix (#2639)

* Renames the md-prefix and md-suffix directives to camelcase.

Closes #2636

BREAKING CHANGE: md-prefix and md-suffix are now mdPrefix and mdSuffix

src/demo-app/input/input-container-demo.html

@@ -53,8 +53,8 @@
   <md-card-content>
     <md-input-container align="end">
       <input mdInput placeholder="amount">
-      <span md-prefix>$&nbsp;</span>
-      <span md-suffix>.00</span>
+      <span mdPrefix>$&nbsp;</span>
+      <span mdSuffix>.00</span>
     </md-input-container>
   </md-card-content>
 </md-card>
@@ -189,21 +189,21 @@ <h4>Textarea</h4>
     <p>
       <md-input-container>
         <input mdInput placeholder="Prefixed" value="example">
-        <div md-prefix>Example:&nbsp;</div>
+        <div mdPrefix>Example:&nbsp;</div>
       </md-input-container>
       <md-input-container align="end">
         <input mdInput placeholder="Suffixed" value="123">
-        <span md-suffix>.00 €</span>
+        <span mdSuffix>.00 €</span>
       </md-input-container>
       <br/>
       Both:
       <md-input-container align="end">
         <input mdInput #email placeholder="Email Address" value="angular-core">
-        <span md-prefix>
+        <span mdPrefix>
           <md-icon [class.primary]="email.focused" class="demo-icons demo-transform">email</md-icon>
           &nbsp;
         </span>
-        <span md-suffix class="demo-transform" [class.primary]="email.focused">
+        <span mdSuffix class="demo-transform" [class.primary]="email.focused">
           &nbsp;@gmail.com
         </span>
       </md-input-container>

src/demo-app/input/input-demo.html

@@ -30,8 +30,8 @@
   <md-toolbar color="primary">Prefix + Suffix</md-toolbar>
   <md-card-content>
     <md-input placeholder="amount" align="end">
-      <span md-prefix>$&nbsp;</span>
-      <span md-suffix>.00</span>
+      <span mdPrefix>$&nbsp;</span>
+      <span mdSuffix>.00</span>
     </md-input>
   </md-card-content>
 </md-card>
@@ -133,16 +133,16 @@ <h4>Textarea</h4>
 
     <p>
       <md-input placeholder="Prefixed" value="example">
-        <div md-prefix>Example:&nbsp;</div>
+        <div mdPrefix>Example:&nbsp;</div>
       </md-input>
       <md-input placeholder="Suffixed" value="123" align="end">
-        <span md-suffix>.00 €</span>
+        <span mdSuffix>.00 €</span>
       </md-input>
       <br/>
       Both:
       <md-input #email placeholder="Email Address" value="angular-core" align="end">
-        <span md-prefix><md-icon [class.primary]="email.focused" class="demo-icons demo-transform">email</md-icon>&nbsp;</span>
-        <span md-suffix class="demo-transform" [class.primary]="email.focused">&nbsp;@gmail.com</span>
+        <span mdPrefix><md-icon [class.primary]="email.focused" class="demo-icons demo-transform">email</md-icon>&nbsp;</span>
+        <span mdSuffix class="demo-transform" [class.primary]="email.focused">&nbsp;@gmail.com</span>
       </md-input>
     </p>
 

src/lib/input/OVERVIEW.md

@@ -50,8 +50,8 @@ attribute on the `input` or `textarea`, or using an `md-placeholder` element in
 HTML can be included before, and after the input tag, as prefix or suffix. It will be underlined as
 per the Material specification, and clicking it will focus the input.
 
-Adding the `md-prefix` attribute to an element inside the `md-input-container` will designate it as
-the prefix. Similarly, adding `md-suffix` will designate it as the suffix.
+Adding the `mdPrefix` attribute to an element inside the `md-input-container` will designate it as
+the prefix. Similarly, adding `mdSuffix` will designate it as the suffix.
 
 ### Hint Labels
 

src/lib/input/README.md

@@ -68,14 +68,14 @@ attribute on the `input` or `textarea`, or using an `md-placeholder` element in
 You can include HTML before, and after the input tag, as prefix or suffix. It will be underlined as
 per the Material specification, and clicking it will focus the input.
 
-To add a prefix, use the `md-prefix` attribute on the element. Similarly, to add a suffix, use the
-`md-suffix` attribute. For example, in a template:
+To add a prefix, use the `mdPrefix` attribute on the element. Similarly, to add a suffix, use the
+`mdSuffix` attribute. For example, in a template:
 
 ```html
 <md-input-container align="end">
   <input mdInput placeholder="amount">
-  <span md-prefix>$&nbsp;</span>
-  <span md-suffix>.00</span>
+  <span mdPrefix>$&nbsp;</span>
+  <span mdSuffix>.00</span>
 </md-input-container>
 ```
 

src/lib/input/input-container.html

@@ -1,6 +1,6 @@
 <div class="md-input-wrapper">
   <div class="md-input-table">
-    <div class="md-input-prefix"><ng-content select="[md-prefix]"></ng-content></div>
+    <div class="md-input-prefix"><ng-content select="[mdPrefix], [md-prefix]"></ng-content></div>
 
     <div class="md-input-infix" [class.md-end]="align == 'end'">
       <ng-content selector="input, textarea"></ng-content>
@@ -19,7 +19,7 @@
       </label>
     </div>
 
-    <div class="md-input-suffix"><ng-content select="[md-suffix]"></ng-content></div>
+    <div class="md-input-suffix"><ng-content select="[mdSuffix], [md-suffix]"></ng-content></div>
   </div>
 
   <div class="md-input-underline"

src/lib/input/input.html

@@ -1,6 +1,6 @@
 <div class="md-input-wrapper">
   <div class="md-input-table">
-    <div class="md-input-prefix"><ng-content select="[md-prefix]"></ng-content></div>
+    <div class="md-input-prefix"><ng-content select="[mdPrefix], [md-prefix]"></ng-content></div>
 
     <div class="md-input-infix">
       <input #input
@@ -80,7 +80,7 @@
       </label>
     </div>
 
-    <div class="md-input-suffix"><ng-content select="[md-suffix]"></ng-content></div>
+    <div class="md-input-suffix"><ng-content select="[mdSuffix], [md-suffix]"></ng-content></div>
   </div>
 
   <div class="md-input-underline"