Update the Readme to include IntelliJ install instructions

Readme.txt

@@ -22,18 +22,21 @@ See the Forge Documentation online for more detailed instructions:
 http://mcforge.readthedocs.io/en/latest/gettingstarted/
 
 Step 1: Create a system variable called "JAVA_MC_HOME" with the location of the JDK 1.8.0_251 (This is needed for gradle to work correctly)
-
 Step 2: replace JAVA_HOME with JAVA_MC_HOME in gradle.bat
-
 Step 3: open a command line in the project folder
 
-Step 4: run the command: "./gradlew geneclipseruns"
+If using Ecplise:
+Step e-1: run the command: "./gradlew geneclipseruns"
+Step e-2: run the command: "./gradlew eclipse"
+Step e-3: Make sure eclipse has the JDK 1.8.0_251 installed. (This is needed so that eclipse can run minecraft)
+Step e-4: Import the project into eclipse
 
-Step 5: run the command: "./gradlew eclipse"
+If using IntelliJ
+step i-1: open IDEA and import the build.gradle
+step i-2: run the command: "./gradlew genIntellijRuns"
+step i-3: refresh the Gradle project in IDEA if required
 
-Step 6: Make sure the eclipse has the JDK 1.8.0_251 installed. (This is needed so that eclipse can run minecraft)
 
-Step 7: Import the project into eclipse
 
 
 
@@ -42,9 +45,7 @@ compiling
 =========
 
 Step 1: open a command line in the project folder
-
 Step 2: run the command: "./gradlew build"
-
 Step 3: the compiled jar file will be in the folder "build\libs"
 
 
@@ -64,7 +65,7 @@ Note to self
 
 The Minecraft source code is NOT added to your workspace in a editable way. Minecraft is treated like a normal Library. Sources are there for documentation and research purposes only.
 
-Source code uses mcp mappings not Mojangs.
+Source code uses Mojang mappings.
 
 The source code can be 'created' with the ./eclipse command and can be found in the following path:
 minecraft-lod-mod\build\fg_cache\mcp\ VERSION \joined\ RANDOM_STRING \patch\output.jar