added license, fixed a few warnings
major refactoring:
- renamed tasks to commands
- added lots of utility functions to CanonCamera
- less verbosity
- all commands are now async by default. call .get() or .now() to wait for the result
- the set property task has gotten smarter
- changed the package structure (explained in the readme)
- added package descriptions
- added a license
- added a readme
fixed arch.png image
added a new method to get file names
added descriptive strings for image qualities, a few accidently line end changes here and there.
Merge branch 'master' into Branch_8999b0f0f978445996984ef05f67099bf71a40a7