Update README.md

Minor edits to formatting and phrasing.

tools/ICALTester/README.md

@@ -3,7 +3,7 @@ ICALTester
 
 This is a simple program to compare various ICAL recurrence implementations
 with ICAL.js. It generates random rules based on the format defined in
-rules.json and runs them through the various libraries.
+`rules.json` and runs them through the various libraries.
 
 Running
 -------
@@ -14,10 +14,12 @@ The usage goes as follows:
 $ node compare.js rules.json ./support/libical-recur
 ```
 
-The first argument to compare.js is the path to the rules.json described
-further down. An example file is provided. The second argument is the path to a
-binary executed for comparison. The binary should be able to take arguments as
-in the following example and expects the same output:
+* The first argument to `compare.js` is the path to the `rules.json` (described
+  further down). An example file is provided. 
+* The second argument is the path to a binary executed for comparison. 
+
+The binary should be able to take arguments as in the following example;
+it expects the same output:
 
 ```bash
 # Usage: ./support/libical-recur <rrule> <dtstart> <occurrence count>
@@ -34,13 +36,13 @@ $ ./support/libical-recur "FREQ=MONTHLY;BYDAY=1FR,3SU" "2014-11-11T08:00:00" 10
 20150403T080000
 ```
 
-The libical-recur binary can be built using the provided Makefile.
+The **`libical-recur`** binary can be built using the provided `Makefile`.
 
 rules.json
 ----------
 
-The format is the same as what can be passed to ICAL.Recur.fromData(), with one
-addition. If the value is `%`, the tester generates a random rule value.
+The format is the same as what can be passed to `ICAL.Recur.fromData()`, with one
+addition: If the value is `%`, the tester generates a random rule value.
 
 Example: