Added Update.md

docs/md/Update.md

@@ -0,0 +1,11 @@
+### Update with `git`
+
+The easiest way to update Lychee is with `git`:
+
+	git pull
+	
+### Update manually
+
+1. Download the [newest Version](https://github.com/electerious/Lychee/archive/master.zip)
+2. Replace all existing files, excluding `uploads/` and `data/`
+3. Open Lychee (and enter your database details)

readme.md

@@ -21,8 +21,7 @@ Sign in and click the gear on the top left corner to change your settings. If yo
 
 ### Update
 
-1. Replace all files, excluding `uploads/` and `data/`
-2. Open Lychee and enter your database details
+Updating is as easy as it should be.  [Update »](docs/md/Update.md)
 
 ### FTP Upload