Readme update

README.md

@@ -1,4 +1,21 @@
-gitsync
+gitsync (BETA)
 =======
 
-Git repository syncronisation daemon
+gitsync is a repository-syncronisation daemon, whose purpose is to
+keep coders on the same project aware of each others' work without
+requiring any pushes to remotes. Running on machines on the same local
+network, on any given peer it will auto-fetch any branches modified on
+the other peers.
+
+For example, say Alice and Bob are working on repo 'foo' on their
+separate machines. With gitsyncd running on both machines, everytime
+Alice makes a local commit, Bob's machine will auto-fetch Alice's
+modified branch into a local one named `gitsync-Alice-branch`.
+
+Run with `gitsyncd /path/to/repo`.
+
+You can open up a local webserver to see a live-updating page of your
+coworker's changes by suppling a port number: `gitsyncd /path/to/repo
+port`.
+
+See extended options by running `gitsyncd -h`.