updating attribution

updating attribution

attribution.md

@@ -27,10 +27,23 @@ Awesome App Icon Designed by [Pravesh Airan](https://twitter.com/PraveshAiran)
 
 ## Libaries
 
+* [Architecture components](https://developer.android.com/topic/libraries/architecture/) from Google
+* [Firebase](https://firebase.google.com) from Google
 * [LeakCanary](https://github.com/square/leakcanary) from Square
 * [Retrofit](https://github.com/square/retrofit) from Square
 * [OkHTTP](https://github.com/square/okhttp) from Square
 * [Picasso](https://github.com/square/picasso) from Square
+* [Timber](https://github.com/JakeWharton/timber) from Jake Wharton
+* [Gson](https://github.com/google/gson) from Google
+* [Spark](https://github.com/robinhood/spark) from Robinhood
+* [AdapterDelegates](https://github.com/sockeqwe/AdapterDelegates) from Hannes Dorfmann
+* [Lottie](https://github.com/airbnb/lottie-android) from Airbnb
+* [Currency-Picker](https://github.com/midorikocak/currency-picker-android) from Midori Koçak
 * [Stetho](http://facebook.github.io/stetho/) from Facebook
-* [BottomNavigationViewEx](https://github.com/ittianyu/BottomNavigationViewEx) from ittianyu
-* [Stetho](http://facebook.github.io/stetho/) from Facebook
+* [BottomNavigationViewEx](https://github.com/ittianyu/BottomNavigationViewEx) from Ittianyu
+* [Picasso-Transformations](https://github.com/wasabeef/picasso-transformations) from Daichi Furiya
+* [PageIndicatorView](https://github.com/romandanylyk/PageIndicatorView) from Roman Danylyk
+* [MaterialDateTimePicker](https://github.com/wdullaer/MaterialDateTimePicker) from Wdullaer
+* [KtLint](https://github.com/shyiko/ktlint) from Stanley Shyiko
+* [Kotlinter](https://github.com/jeremymailen/kotlinter-gradle) from Jeremy Mailen
+