Update .gitignore

.gitignore

@@ -1,12 +1,38 @@
-.gradle
-libsuperuser/.classpath
-libsuperuser/.project
-libsuperuser/.settings
-libsuperuser/bin
-libsuperuser/gen
-libsuperuser/build
-libsuperuser_example/bin
-libsuperuser_example/gen
-libsuperuser_example/build
-libsuperuser_example/proguard
-libsuperuser_example/dexguard
+# Built application files
+*.apk
+*.ap_
+
+# Files for the Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+
+# Gradle files
+.gradle/
+build/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Log Files
+*.log
+
+# Eclipse settings files
+.settings/
+
+# IntelliJ project files
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# Misc
+.DS_Store