Update LICENSE in line with https://about.gitlab.com/handbook/engineering/#gitlab-repositories

LICENSE

-Copyright (c) 2013 Dmitriy Zaporozhets
+Copyright (c) 2011-2017 GitLab B.V.
+
+With regard to the GitLab Software:
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -18,3 +20,6 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 
+For all third party components incorporated into the GitLab Software, those
+components are licensed under the original license provided by the owner of the
+applicable component.