[WIP] Migrate to AndroidX (#141)

Migrate to AndroidX

.gitignore

@@ -1,19 +1,23 @@
-.DS_Store
-Thumbs.db
+# Mac OS
+.DS_store
 
-# gradle files
-.gradle
+# Built application files
+*.apk
+*.ap_
 
-# Intellij project files
-.idea
-*.iml
+# Files for the ART/Dalvik VM
+*.dex
 
-# generated files
+# Java class files
+*.class
+
+# Generated files
 bin/
 gen/
-obj/
-apk/
-target/
+out/
+
+# Gradle files
+.gradle/
 build/
 
 # Local configuration file (sdk path, etc)
@@ -21,3 +25,38 @@ local.properties
 
 # Proguard folder generated by Eclipse
 proguard/
+
+# Log Files
+*.log
+
+# Android Studio Navigation editor temp files
+.navigation/
+
+# Android Studio captures folder
+captures/
+
+# IntelliJ
+*.iml
+.idea/workspace.xml
+.idea/tasks.xml
+.idea/gradle.xml
+.idea/assetWizardSettings.xml
+.idea/dictionaries
+.idea/libraries
+.idea/caches
+.idea/misc.xml
+.idea/modules.xml
+.idea/navEditor.xml
+.idea/markdown*
+projectFilesBackup/
+
+# Keystore files
+# Uncomment the following line if you do not want to check your keystore files in.
+#*.jks
+
+# External native build folder generated in Android Studio 2.2 and later
+.externalNativeBuild
+
+# Google Services (e.g. APIs or Firebase)
+google-services.json
+