Adds doc for interface, examples also fix bug with export script - #256

Adds doc for interface, examples also fix bug with export script#256

StephenNneji merged 3 commits into

RascalSoftware:mainRascalSoftware/RasCAL-2:mainfrom

StephenNneji:more_docs_againStephenNneji/RasCAL-2:more_docs_againCopy head branch name to clipboard