Add support for self-hosted Gitlab. Fixes #8.

README.md

@@ -27,6 +27,26 @@ curl -o ~/bin/git-open https://raw.githubusercontent.com/paulirish/git-open/mast
 chmod +x ~/bin/git-open
 ```
 
+
+## Gitlab support
+To configure gitlab support you need to set gitopen.gitlab.domain:
+
+```
+git config --global gitopen.gitlab.domain  [yourdomain.here]
+```
+
+or
+
+```
+git config gitopen.gitlab.domain [yourdomain.here] in your local repository
+```
+
+By default it goes to the tree view but can be changed to go to the commits view like so:
+
+```
+git config gitopen.gitlab.urldifference commits
+```
+
 ## Thx
 @jasonmccreary did [all the hard work](https://github.com/jasonmccreary/gh)
 

git-open

@@ -44,6 +44,20 @@ if grep -q github <<<$giturl; then
 elif grep -q bitbucket <<<$giturl; then
     giturl=${giturl/git\@bitbucket\.org\:/https://bitbucket.org/}
     providerUrlDifference=branch
+else
+  gitlab_domain=$(git config --get gitopen.gitlab.domain)
+  if [ ! -z "$gitlab_domain" ]; then
+    if grep -q $gitlab_domain <<<$giturl; then
+      giturl=${giturl/git\@${gitlab_domain}:/https://${gitlab_domain}/}
+
+      gitlab_urldifference=$(git config --get gitopen.gitlab.urldifference)
+      if [ -z "$gitlab_urldifference" ]; then
+        providerUrlDifference=tree
+      else
+        providerUrlDifference=$gitlab_urldifference
+      fi
+    fi
+  fi
 fi
 giturl=${giturl%\.git}