Add UserStream class

Signed-off-by: chatgris <jboyer@af83.com>
Update roadmap

Signed-off-by: chatgris <jboyer@af83.com>
Update README

Signed-off-by: chatgris <jboyer@af83.com>
Store twitter's api version in constant

Signed-off-by: chatgris <jboyer@af83.com>
Merge branch 'master' into user_stream

Conflicts:
	README.md
	lib/gazouillis.rb
Fix rubygems deprecation notice

Signed-off-by: chatgris <jboyer@af83.com>
Add license to gemspec

Signed-off-by: chatgris <jboyer@af83.com>
Bump version

Signed-off-by: chatgris <jboyer@af83.com>
Fix rubygems deprecation notice

Signed-off-by: chatgris <jboyer@af83.com>
Simpler hook management

Signed-off-by: chatgris <jboyer@af83.com>
Merge branch 'user_stream'