add UT case for _parse_code
RenrenBlog platform
support Page post
add UT for expiration check methods
solve conflicts...
Merge branch 'doc' into dev
remove extra line from conflict msg..
expand and short an url (short is just for sina)
add renren and tencent short url UT
add imports
1) deal with invalid URL 2) format: tab -> blanks
Merge branch 'master' into dev
add contributor
Merge branch 'dev' into doc