a automatic python crawler

This is my graduation project. It's developing!

2015-2-19 v0.1.0: finish the core code.

2015-2-20 v0.1.1: fix bugs, recode the 'crawler.xml', more stable

2015-2-21 v0.1.2: fix bugs

bug:

• some same result

• some times list out of range in job.py[line:177]

• unicode '\u200d' end of url, make crawler program error

• saving snapshots can't working in some web sites