Complete Missing Parts of A Libgdx Game

Current Version of Game APK is Here ; [login to view URL] Leaderboard implementation google play services, Library is already added, Should implement basic highest level implementation. (For Both İos And Android) In game Boost Implementation, I already implemented how boosts will work, I need a screen that user can buy a boost level by using his collected heart points. I have 3 boosts now, Faster bird, Slower time and Shortened Arc sizes. Every boost will have buyable 4-5 levels and every level price will be higher then previous one. It will be like car game, that user can upgrade cars in acceleration, speed , and gear etc. Every buy operation will be reduced from the heart points balance. Data will be saved in JSON format to a file(I added the implementation of save and load) You dont need to implement how boost affect ingame play, I implemented some and will be completing soon after your work done. Facebook Share Implementation A button will be added on screen and will let user to share his current score to facebook. Can be added to a game success Screen and main menu. I already added some simple ad integration of admob for both ios and android versions.(I can show banner and interstatial right now) I Havent developed an algorithm about how frequent an interstatial will show up but DONT focus on that, I just need some other ad networks to be added may be adcolony etc. A rewarded video ad implementation is preferable may be. We can discuss details about it, A simple Rate button will be added, That button will redirect user to my game url on market for ios and android too.