Update README

"Slack" should start with uppercase.
Fix headings.

Author: alexandear

README.markdown

@@ -1,18 +1,18 @@
 # TCSlackNotifierPlugin - TeamCity -> Slack Notifications
 
-A plugin for [TeamCity](http://www.jetbrains.com/teamcity/) to post notifications to [slack](https://slack.com/)
+A plugin for [TeamCity](http://www.jetbrains.com/teamcity/) to post notifications to [Slack](https://slack.com/)
 
-It works by registering as a server listener, and posts to slack on build events like successful builds (optionally also builds starting and failing)
+It works by registering as a server listener, and posts to Slack on build events like successful builds (optionally also builds starting and failing)
 
-#Build Plugin
+# Build Plugin
 
 Gradle is used to build. Wrapper is included in the project so you dont need to install it, just have java.
 
     ./gradlew buildZip
 
 this will generate a zip file with the right meta data in the right folder structure at : `build/distributions/TCSlackNotifierPlugin-<version>.zip` you can also download a build from GitHubs versions section.
 
-#Install Plugin
+# Install Plugin
 
 Copy the zip file into TeamCity plugin directory inside the data directory, usually `.BuildServer`
 
@@ -22,12 +22,12 @@ scp build/distributions/TCSlackNotifierPlugin-<version>.zip buildserver:.BuildSe
 
 Then restart TeamCity.
 
-#Configuration
+# Configuration
 
-###In slack
+### In Slack
 Add a new webhook integration. Make a note of the URL.
 
-###In TeamCity
+### In TeamCity
 
 Edit the main config file, usually `.BuildServer/config/main-config.xml` and add an element like so:
 
@@ -45,13 +45,13 @@ Edit the main config file, usually `.BuildServer/config/main-config.xml` and add
 
 You can set the attributes on slackNotifier element (postSuccessful,postFailed,postStarted) to decide that notifications you would like posted.
 
-Set the **slackPostUrl** to point to the url provided on the Slack integration page for the incoming webhook you created. Change the logo url whatever you want or leave it out.
+Set the `slackPostUrl` to point to the url provided on the Slack integration page for the incoming webhook you created. Change the logo url whatever you want or leave it out.
 
-This by default will post all builds to slack. you can tweak these on a project level though
+This by default will post all builds to Slack. You can tweak these on a project level though.
 
-####Project Config (Optional)
+#### Project Config (Optional)
 
-To change channel, change the slack logo used for that project or disable per project:
+To change channel, change the Slack logo used for that project or disable per project:
 
 Edit the plugin specific xml config, `plugin-settings.xml` probably somewhere inside `.BuildServer/config/projects/PROJECTNAME`
 
@@ -64,17 +64,17 @@ Edit the plugin specific xml config, `plugin-settings.xml` probably somewhere in
 </settings>
 ```
 
-#Note on TeamCity version support
+# Note on TeamCity version support
 
 I'm still using **TeamCity 7.1** , but a few tests on the free version of TeamCity 8 went fine, and it seems to work there also. Users have reported it working on version 9 also.
 
-###Issues
+### Issues
 
-* all xml config - needs web ui extensions for updating settings from GUI. Considering it.
-* channel can be changed per-project either by environmental variable (SLACK_CHANNEL (env var may be broken)) or by changing the project specific xml in the data directory. This could also use web ui extension UI for editing.
+* All xml config - needs web ui extensions for updating settings from GUI. Considering it.
+* Channel can be changed per-project either by environmental variable (SLACK_CHANNEL (env var may be broken)) or by changing the project specific xml in the data directory. This could also use web ui extension UI for editing.
 * All or nothing notifications. By default, all builds are posted. It can be disabled per project, but not currently by build config.
 
 
 # License
 
-MIT License.
+MIT License.