Improve .gitignore

.gitignore

@@ -1,6 +1,12 @@
-# Built application files
-*.apk
-*.ap_
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and WebStorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
 
  # Files for the ART/Dalvik VM
 *.dex
@@ -9,58 +15,77 @@
 *.class
 
 # Generated files
-bin/
-gen/
-out/
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+.idea/modules.xml
+.idea/*.iml
+.idea/modules
+*.iml
+*.ipr
+
+# CMake
+cmake-build-*/
 
 # Gradle files
 .gradle/
 build/
 
-# Local configuration file (sdk path, etc)
-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
+# Android Studio
 .idea/caches
-.idea/modules.xml
+.idea/assetWizardSettings.xml
 
-# Keystore files
-# Uncomment the following line if you do not want to check your keystore files in.
-#*.jks
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# Local configuration file (SDK path, etc)
+local.properties
 
 # External native build folder generated in Android Studio 2.2 and later
 .externalNativeBuild
 
-# Google Services (e.g. APIs or Firebase)
-google-services.json
+# IntelliJ
+out/
 
-# Freeline
-freeline.py
-freeline/
-freeline_project_description.json
+# mpeltonen/sbt-idea plugin
+.idea_modules/
 
-# fastlane
-fastlane/report.xml
-fastlane/Preview.html
-fastlane/screenshots
-fastlane/test_output
-fastlane/readme.md
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+# Android Studio captures folder
+captures/