Adding instructions for building/developing/testing with IntelliJ. This closes ESAPI#366.

Author: davidmyersdev

documentation/how-to-build-and-develop-with-intellij.md

@@ -0,0 +1,14 @@
+# How to Build and Develop ESAPI with IntelliJ
+
+IntelliJ is set up to run pretty seamlessly out of the box, but there are still a few configuration options we need to change in order to get Unit Tests to run properly.
+
+1. Click `Run` > `Edit Configurations...`
+2. Click `+` > `JUnit` to add a new Run Configuration for JUnit
+3. Set the `Name:` field to `JUnit Config`
+4. Set the `Test kind:` field to `All in package`
+5. Set the `Search for tests:` field to `In whole project`
+6. Set the `Working directory:` field to **your** project root directory (e.g. ~/workspace/esapi-java-legacy)
+
+In order to Run ESAPI with Tests, you just need to select `Run` > `Run 'JUnit Config' with Coverage`
+
+That's it!