Changed API
Added test points
Added points and functions
Merge branch 'master' of https://github.com/schickling/angular-coordinate

# By Johannes Schickling
# Via Johannes Schickling
* 'master' of https://github.com/schickling/angular-coordinate:
  Fixed scaling
  Added scaling
  Prepared drag&drop
  prepared listener

Conflicts:
	demo/demo.js
	src/coordinate.js