Added build script to install Mono.

Author: tritao

build/InstallMono.sh

@@ -0,0 +1,24 @@
+osis()
+{
+    local n=0
+    if [[ "$1" = "-n" ]]; then n=1;shift; fi
+
+    # echo $OS|grep $1 -i >/dev/null
+    uname -s |grep -i "$1" >/dev/null
+
+    return $(( $n ^ $? ))
+}
+
+osis Darwin &&
+{
+	wget -O mono.pkg http://download.mono-project.com/archive/4.2.1/macos-10-x86/MonoFramework-MDK-4.2.1.102.macos10.xamarin.x86.pkg
+	sudo installer -pkg \"mono.pkg\" -target /	
+}
+
+osis Linux &&
+{
+	sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
+	echo "deb http://download.mono-project.com/repo/debian wheezy main" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list
+	sudo apt-get update -qq
+	sudo apt-get install -y mono-devel
+}