Mono is great as it allows you to run .NET applications on Linux. C# is a great language, and is encouraged as a cross-platform alternative to Java. Unfortunately, Xamarin has chosen to focus on Macs and Windows, and getting mono working on Linux is not so straight forward.
As of this writing, the official latest 3.2.5 and 3.2.6 tarballs are actually broken (should be fixed with 3.2.7). We need to pull the version we want from git instead.
See this url for more information: https://bugzilla.xamarin.com/show_bug.cgi?id=16431
This url describes getting the version 110 monolite that has moved:
yum install libtool autotools gcc-c++ git
git clone https://github.com/mono/mono.git
git checkout mono-3.2.6
make monolite_url=http://storage.bos.xamarin.com/mono-dist-master/bf/bf17a43b31a2be16f462ffdf1ae3d9801b846e90/monolite-110-latest.tar.gz get-monolite-latest