add vagrant.sh for setting up linux deps; add usage instructions

README.md

@@ -2,3 +2,23 @@ demboyz
 =======
 
 we dem boyz
+
+
+### Using Vagrant
+
+    # Launch VM
+    vagrant up
+    vagrant ssh
+    cd /vagrant
+
+    # Install Linux dependencies (first time setup)
+    ./vagrant.sh
+
+    # Build demboyz
+    cd premake
+    ./gmake.sh && cd gmake
+    make
+
+    # Disconnect session and stop VM
+    exit
+    vagrant halt

vagrant.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# http://askubuntu.com/a/497033
+sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
+sudo apt-get update
+
+sudo apt-get install build-essential -y
+
+sudo apt-get install gcc-4.9 g++-4.9 -y
+sudo apt-get install gcc-4.9-multilib g++-4.9-multilib -y
+
+sudo apt-get install clang-3.6++ -y
+sudo ln -s /usr/bin/clang++-3.6 /usr/bin/clang++