Updated fork: Fixed imports, simplified the code

Simplified the code by using an enviroment variable `MYGOCRAWL_SEEDS_FILENAME`

new file:   .gitignore
new file:   url.go

modified:   README.md
modified:   mygocrawl.go

deleted:    conf/config.cfg
deleted:    conf/configfile.go
deleted:    crawl/crawlcnf.go
deleted:    crawl/url.go
deleted:    data/url.data
deleted:    log/log.go