Implemented basic stage setup

+ Cotton auto run
+ canvas is a create() factory
+ randomString() util method
+ cotton has basic canvas
+ Map.js imported from old layout
+ Basic stage functionality
Simple method implemented :P

+ draw method on cotton provides the simplest functionality.
+ create() method accepts an initial draw method
+ usage.js provides a simple example
+ simple.js provides the simplest example
new gitbook
gitbook edit
corrected readme

+ spelling
+ language corrections
clean up

+ context renderer automatically starts
+ Step functionality implemented
refactor and step clock implementation

+ moved step logic from `draw()`
+ auto stop step when started