Update README.md

I've added a link to each chapter and appendix for easy navigation
Small typo fix 

Changed "myLayer is not a child of myScene" to "myLayer is now a child of myScene"
Changed "rotating" to "scaling" for the scale example
Merge pull request #10 from kidproquo/patch-1

Small typo fix
Merge pull request #8 from MannyDev/patch-1

Update README.md
Merge pull request #11 from kidproquo/master

Changed "rotating" to "scaling" for the scale example
adjust menu limitations
Merge remote-tracking branch 'refs/remotes/upstream/master'
Merge pull request #13 from andyque/master

Improve the limitation part of Menu class
continued edits
started to add networking
 started 3D translation
Add Coodinate system
Chapter 6 resources
Modify Coordinate systems
Update 2.md

Fixing typo.
Update the "Why choose" list

This is a start. 

Need more things. I would like to see a list for the vast API included in the last bullet point. I don't know the complete list. Maybe: sprite (atlas, sheet), actions, animations (including skeletal), particles, transitions, timers, events (touch, keyboard, accelerometer, mouse), sound, file IO, persistence
Added a list of examples for the vast API available

This list needs to be updated.
Merge pull request #16 from kr15to/patch-1

Thank You
Merge pull request #17 from kidproquo/master

Make the why choose list more comprehensive