Standalone compiler improvment

[xavierzwirtz]

Refactored compilation of assemblies into FunScript core. Added ability to compile an fsproj to FunScript. Added [<FunScript.AssemblyMain>]attribute to tell FunScript what the main method for an assembly is. Added ability to specify output via stdout or saving to a file.

This should pave the way for the other enhancements proposed in #153.

I had to switch FunScript.Compiler to call FunScript.Compiler.Compile via reflection due to odd issues with the jquery type provider not working. This should be better any way, makes it where FunScript.Compiler is not dependent on a specific FunScript version.