add initial version

.gitignore

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+### Android ###
+# Built application files
+*.apk
+*.ap_
+
+# Files for the Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+
+# Gradle files
+.gradle/
+build/
+
+app/build/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Log Files
+*.log
+### Intellij ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm
+
+*.iml
+build
+
+## Directory-based project format:
+.idea/
+
+## File-based project format:
+*.ipr
+*.iws
+
+### OS Specific ###
+.DS_Store
+Thumbs.db
+[Dd]esktop.ini
+$RECYCLE.BIN/
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/