Added build file for all examples.

examples/.gitignore

@@ -0,0 +1,32 @@
+**/.idea/dictionaries
+**/.idea/gradle.xml
+**/.idea/libraries
+**/.idea/tasks.xml
+**/.idea/workspace.xml
+**/src/*.class
+*.code-workspace
+*.iws
+*.properties
+*.sublime-*
+.classpath
+.DS_Store
+.gradle
+.kobalt
+.nb-gradle
+.project
+.settings
+/bin
+/build
+/deploy
+/dist
+/gen
+/gradle.properties
+/local.properties
+/out
+/proguard-project.txt
+/project.properties
+/target
+/test-output
+ehthumbs.db
+kobaltBuild
+Thumbs.db