Bugs fixes (v1.1.2)

(Version 1.1.2 beta; 11/01/14)
- IMPROVE: Added unformated url input in the examples documentation
section.
- IMPROVE: Better documentation for some functions.
- FIX: sizeof_human failed on python2.6.
- FIX: Sometimes didn't escape urls proprely.
- FIX: Sphinx wasn't able to locate the pySmartDL package.