first commit

finished:
scheduler.task_queue # task queue with priority queue, time queue and
                     # processing queue
scheduler.token_bucket # a token bucket based flow control
scheduler.scheduler # part
add sqlite database and test
add projectdb
scheduler base process flow
add fetcher
add sync_fetch method for fetcher
add processor
Initial commit
update
Merge github.com:binux/pyspider
add test for processor
add webui base skeleton, add resize for debug.html
debug main style
add backend for debug
add follows tab
add logs
html format when click tab
add save project
fix css in chinese
add requirements.txt