Update readme to reflect Android app instead of generic app idea

README.md

@@ -2,64 +2,4 @@ Number-Guessing Game
 --------------------
 A simple game where the computer picks a number and the player must guess what it is.
 
-## Gameplay:
+This app is mostly meant for me to learn Android dev with while I follow along with Udacity's [Developing Android Apps](https://www.udacity.com/course/new-android-fundamentals--ud851) course. I'm still building Sunshine of course but a little extra practice never hurt :) I'd appreciate any tips/tricks on how I could improve this app as really I'm doing what I can with what I pick up from the course/Android documentation/StackOverflow, and I'm sure there are better ways of accomplishing this. 
-1. Computer generates random number
-2. Computer starts "I'm thinking of a number..."
-3. Player inputs number
-4. Computer responds higher, lower, or exact for input
-5. 2 & 3 repeat until player guesses number
-6. Computer says how many guesses it took
-
-## Requirements:
-* player
-  * ability to give input
-  * player's guessed numbers
-* computer
-  * computer's random number
-  * ability to receive input
-  * number comparison calculations
-  * give reply on number
-
-## Future Challenges
-* ~~Ask player if they want to play again~~
-* Reverse roles: human picks number and AI guesses
-* Multiplayer: play with two humans
-* Spectator: play with two AIs
-* Menu: select between different game modes
-* Build a GUI 
-
-## Contribution 
-Add the files you changed:
-```
-git add ngg.php
-```
-
-Commit the new changes:
-```
-git commit -m "Fixed syntax error"
-```
-
-Push the changes
-```
-git push
-```
-
-Get the latest code
-```
-git pull
-```
-
-See the changes you've made since your last commit (press Q to exit if it's long enough to scroll)
-```
-git diff
-```
-
-See which branch you're on now
-```
-git branch
-```
-
-Switch to a different branch to see that language's work:
-```
-git checkout php
-```