readme: markdown for link rendering

README.md

@@ -1,4 +1,5 @@
-ShellCheck - A shell script static analysis tool
+# ShellCheck - A shell script static analysis tool
+
 http://www.shellcheck.net
 
 Copyright 2012-2014, Vidar 'koala_man' Holen
@@ -19,29 +20,35 @@ ShellCheck is written in Haskell, and requires GHC, Parsec3, JSON and
 Text.Regex. To run the unit tests, it also requires QuickCheck2.
 
 On Fedora, these can be installed with:
-  yum install cabal-install ghc ghc-parsec-devel ghc-QuickCheck-devel \
+
+    yum install cabal-install ghc ghc-parsec-devel ghc-QuickCheck-devel \
       ghc-json-devel ghc-regex-compat-devel
 
 On Ubuntu and similar, use:
-  apt-get install ghc libghc-parsec3-dev libghc-json-dev \
+
+    apt-get install ghc libghc-parsec3-dev libghc-json-dev \
       libghc-regex-compat-dev libghc-quickcheck2-dev cabal-install
 
 For older releases, you may have to use:
-  apt-get install ghc6 libghc6-parsec3-dev libghc6-quickcheck2-dev \
+
+    apt-get install ghc6 libghc6-parsec3-dev libghc6-quickcheck2-dev \
       libghc6-json-dev libghc-regex-compat-dev cabal-install
 
 On Mac OS X with homebrew (http://brew.sh/), use:
-  brew install cabal-install
+
+    brew install cabal-install
 
 On Mac OS X with MacPorts (http://www.macports.org/), use:
-  port install hs-cabal-install
+
+    port install hs-cabal-install
 
 Executables can be built with cabal. Tests currently still rely on a Makefile.
 
 Install:
-  $ cabal install
-  ...
-  $ which shellcheck
-  ~/.cabal/bin/shellcheck
+
+    $ cabal install
+    ...
+    $ which shellcheck
+    ~/.cabal/bin/shellcheck
 
 Happy ShellChecking!