implemented avatar and information extension point for svn, hg and git

scm-plugins/scm-git-plugin/src/main/js/GitAvatar.js

@@ -0,0 +1,15 @@
+//@flow
+import React from 'react';
+
+type Props = {
+};
+
+class GitAvatar extends React.Component<Props> {
+
+  render() {
+    return <img src="/images/git-logo.png" alt="Git Logo" />;
+  }
+
+}
+
+export default GitAvatar;