Update .travis.yml
Make README more clearly.
Solve the problem of losing a record.
change to new version.
Update the new gem.
revise directory
revise directory.
Merge branch 'PoWei' of github.com:seanyen0507/web_scraper into PoWei
seanyean revise on branch PoWei.
Merge branch 'samWang' of github.com:seanyen0507/web_scraper into PoWei
Try to merge branch samwang and PoWei to build the newer gemfile.
Merge branch 'samWang'