Correct IDEA instructions slightly.

README.md

@@ -49,7 +49,8 @@ tests in the project:
 We strongly recommend using [IntelliJ IDEA](http://www.jetbrains.com/idea/).
 There are project files available in this repository which will load all of the
 subprojects properly, and configure IDEA with our preferred code style,
-license headers, etc. Simply open the `dmdirc.iml` file with IDEA to get going.
+license headers, etc. Simply tell IDEA to open a new project, and select the
+directory this repository is checked out to.
 
 Contributing
 --------------------------------------------------------------------------------
@@ -118,4 +119,4 @@ repository.
 
 The meta repository includes a gradle build script that finds these dependencies
 and replaces them with project links instead. This ensures that while developing
-the client your changes are reflected across modules properly.
+the client your changes are reflected across modules properly.