<NME> .gitignore
<BEF> .gradle/*
build/*
example-app/build/*
example-app/.gradle/*
.DS_Store
.rspec

<MSG> Add IntelliJ project files in .gitignore

<DFF> @@ -4,3 +4,5 @@ example-app/build/*
 example-app/.gradle/*
 .DS_Store
 .rspec
+*.iml
+.idea/*

Add IntelliJ project files in .gitignore