Merge pull request #4 from michaelavila/add_mit_license

Add MIT license
Update readme
Add problems file
Introduce proper config file
Delete outdated text config
Update config to ignore template directory
Add deprecated section to config
Run configlet on travis
Delete leftover directory
Configure order of problems
Change name of key for consistency
Add foregone key to config
nucleotide-count: Remove special treatment of uracil

For the related discussion see https://github.com/exercism/xpython/pull/98.
Merge pull request #7 from sjakobi/adjust-nucleotide-count

nucleotide-count: Remove special treatment of uracil