Fix formatting

Installation.md

@@ -3,30 +3,31 @@ Installation instructions for HasteBin.
 ## Debian and derivates
 
 1. Install dependancies 
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+	```sh
 	sudo apt-get install g++ curl libssl-dev apache2-utils
 	sudo apt-get install git-core
 	sudo apt-get install redis-server
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+	```
 
 2. Install node.js 
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+	```sh
 	git clone git://github.com/joyent/node.git
 	cd node
 	./configure
 	make
 	sudo make install
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-
+	```
 3. Install and start hastebin
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+	```sh
 	git clone git://github.com/seejohnrun/haste-server.git
 	cd haste-server
 	npm install
 	npm install hiredis #optional
 	npm start
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+	```
 
 And you should have hastebin! 
 Note: It will run on port 7777 by default