tweak issue template

[ci skip]

.github/ISSUE_TEMPLATE.md

@@ -1,7 +1,9 @@
-Please ensure that you are using the latest version of Buford and its dependencies before reporting an issue.
+Please ensure that you are using the latest version of Buford and its dependencies before reporting an issue. Use the `-u` flag with `go get` as described in the [README](https://github.com/RobotsAndPencils/buford/blob/master/README.md#installation).
 
 NOTE: please don't include your device token or certificate password in issues.
 
-What did you do? (steps to reproduce or a code sample is helpful)
-What did you expect to see?
-What did you see instead?
+1. What version of Go are you using (`go version`)?
+2. What operating system (GOOS) are you using (`go env`) and what version?
+3. What did you do? (steps to reproduce or a code sample is helpful)
+4. What did you expect to see?
+5. What did you see instead?

README.md

@@ -38,7 +38,7 @@ Also see Apple's [Local and Remote Notification Programming Guide][notification]
 
 ### Installation
 
-This library requires [Go 1.6.2](https://golang.org/dl/) or better.
+This library requires [Go 1.6.3](https://golang.org/dl/) or better.
 
 ```
 go get -u -d github.com/RobotsAndPencils/buford