Adding procFreq procedure

- Updating
   -.gitignore with:
  	- *.pyc
  	- /SAS/base/sandbox.py
   - SAS/__init__.py
	- import base.api
- Adding
  	- base/api.py
	- base/data folder
	- procFreq.py
       - nose test_procs.py

- Updating README and adding change version in setup.py

Signed-off-by: Alberto Negron <albertonegron@gmail.com>
Updating version in setup.py
Merge branch 'master' of https://github.com/Altons/SASpy