some python fixes
Merge branch 'master' of github.com:veltzer/demos

Conflicts:
	README.md
	python/exercises/interbit_basic/03_basic_statements/word_report_1.py
	python/exercises/interbit_basic/05_functions/min_max_avg_2.py
	python/exercises/interbit_basic/05_functions/rev_hash_func_1.py