Docs : Location of examples in Canopy is outdated

[rahulporuri]

See : http://docs.enthought.com/chaco/quickstart.html#location
Since Canopy 2.x, the Canopy installation path has changed so they need to be updated to reflect Canopy >2 and <2 path.

[corranwebster]

Possibly should just drop the Canopy < 2 and give EDM based instructions.

[rahulporuri]

edm based instructions for installing chaco?

[achabotl]

Closed by #462.