[DONE] Selfspy - Windows Support!

###### Added:  
* Windows support!  
 
###### Patches:   
* Added a session.rollback() in SQLAlchemy.   
https://github.com/Foxboron/selfspy/blob/0ff7d2b8ea1578fe28e45294957fa16d85b4a811/selfspy/activity_store.py#L86
* Added a exit when KeyInterrupt occurs:   
https://github.com/Foxboron/selfspy/blob/0ff7d2b8ea1578fe28e45294957fa16d85b4a811/selfspy/__init__.py#L137
* Added a description of Selfspy on windows:    
https://github.com/Foxboron/selfspy/blob/84efdb15db8665480cf95693088cb46e1e61d822/README.md