version number bumped to 0.3.0
added html doc
Merge branch 'release-0.3.0'
Merge branch 'develop' : Release 1.0 of pydyn

Conflicts:
	setup.py
Merge branch 'develop'

Conflicts:
	setup.py
Merge branch 'develop'
adding updated doc
bump version to 0.9.3.beta1
fix readonly puch
better exection message when no motors in MotorSet, fix #2
__dir__ method for MotorSet, closes #10
MotorError error is transmitted and raised by motor instances