Revert "Upgrade to Mono 3.2.7 on Travis"

This reverts commit 723d5aa2e81904e8fd86cb258917fb73ca7e90f3.
Revert "Get Irony from NuGet"

This reverts commit 8203e4948bc777602c5cfe1fdd068c19805f97c6.
Revert "TargetFrameworkVersion=4.5"

This reverts commit 97aca992f619635056aabbac4818cc69a4022415.
Revert "    Upgrade to Mono 3.2.5 on Travis."

This reverts commit fe1f2d4111b170f8e375e4e071323c2d6eb40178.
Merge pull request #196 from Pash-Project/revert-new-mono

Revert new mono/nuget