version 0.7.1 

docs and pgp version 

code4craft#552 add some log when crawler stop 

new version 

[maven-release-plugin] copy for tag webmagic-parent-0.6.0 

将Spider.processRequest()抛出异常改回原来的逻辑 

version 0.6.0 

remove useless files 

update version in docs 

[maven-release-plugin] copy for tag WebMagic-0.5.1