Updated readme

Added support for variables on the stack, recursive functions now work :)

Added clang support

Code cleanup and updated README

Misc improvements and fixed gcc 4.9 and 5.3 support

Better support for string pointer variables

Updated README.md

Updated readme

Stack improvements on user defined functions

Non-recursive userdefined functions now work

Work on user defined functions and misc

New type system, added print_i and io_write_i, fixed for loops

Fixed io_read

Functioncall revamp, clobber fixes, output in C

Humongous change