attempt to fix issues in generated github pages

Author: TheSnoozer

README.md

@@ -51,6 +51,8 @@ You can check the available versions by visiting [search.maven.org](https://sear
 
 Plugin compatibility with Java
 -------------------------------
+Here is an overview of the current plugin compatibility with Java
+
 | Plugin Version  | Required Java Version |
 | --------------- | ---------------------:|
 | 2.1.X           | Java 1.6              |

docs/use-cases.md

@@ -1,5 +1,6 @@
 Use cases
 =========
+
 Which version had the bug? Is that deployed already?
 ----------------------------------------------------
 If you develop your maven project inside an git repository you may want to know exactly what changeset is currently deployed. Why is this useful? 

docs/using-the-plugin.md

@@ -881,6 +881,8 @@ You can also change the default phase of each execution by adding a `phase` defi
 Generated properties
 ---------------------
 
+Here is an overview of the set of properties that can be generated by the plugin.
+
  | generated property            | description                             |
  | ----------------------------- | ----------------------------------------|
  |`git.branch`                   | Represents the current branch name. Falls back to commit-id for detached HEAD. Note: When an user uses the `evaluateOnCommit` property to gather the branch for an arbitrary commit (really anything besides the default `HEAD`) this plugin will perform a `git branch --points-at` which might return a comma separated list of branch names that points to the specified commit. |