This allocates nodes slots in advance to avoid memory grow & copy.
it will be benefit if you know how many shapes will be used in your canvas.
Change-Id: I7d93d166c9c054078bd86593d3471a2ade3671ee
To show the result, we use efl library.
Most linux distribution supports efl library from their package repo,
you can easily install efl from its package repo:
Ubuntu:
$ apt-get install libelementary-dev
Or, please visit efl site to install EFL libarary manually:
https://www.enlightenment.org/download
Change-Id: I696ac72e4ec7ea3258161a15b58171d74c16830d
