twitterの自分のツイートからキーフレーズを抽出 closes #45

modify:		server/app.rb
new file:	server/lib/get_keyphrases.rb
new file:	server/lib/oauth_facebook.rb
new file:	server/lib/oauth_twitter.rb
new file:	server/lib/parse_tweet.rb
new file:	server/lib/twitter_configure.rb
Merge branch 'feature/id/45' into develop