Added intro text
Added more doc
Typos
More typos
Travis config
Added some unit tests
Travis builds 2.7 upwards
Python3 compatibility
Fix test
Tests compatible with Python3
Tests compatible with Python3
Update doc
Prunes shadow bindings when extending environments;
Improved error checking when creating lambdas
Added Requirements.txt / Coverage metrics
Added more tests for better coverage
Added Python 3.4 as a build target to travis CI
Changed raising KeyError -> ValueError (Python3 compat)
Merge branch 'master' of github.com:rm-hull/yalix into feature/lazy-lists

* 'master' of github.com:rm-hull/yalix:
  Changed raising KeyError -> ValueError (Python3 compat)
  Added Python 3.4 as a build target to travis CI
  Prunes shadow bindings when extending environments; Improved error checking when creating lambdas Added Requirements.txt / Coverage metrics Added more tests for better coverage
  Update doc
  Tests compatible with Python3
  Tests compatible with Python3
  Fix test
  Python3 compatibility
  Travis builds 2.7 upwards
  Added some unit tests
  Travis config
  More typos
  Typos
  Added more doc
  Added intro text

Conflicts:
	src/python/yalix/interpreter/builtins.py
Merge branch 'feature/lazy-lists' of github.com:rm-hull/yalix into feature/lazy-lists

* 'feature/lazy-lists' of github.com:rm-hull/yalix:
  Update README.md