Merge pull request #21 from wobh/master

rna-trans: add template dna.lisp file
Moving a few exercises earlier in the progression as they are quite easy.
Changing language name in config.json.
Merge pull request #22 from verdammelt/reorder-exercises

Moving a few exercises earlier in the progression as they are quite easy...
Merge pull request #24 from verdammelt/change-language-name

Changing language name in config.json.
Adding starting code.
Merge pull request #25 from verdammelt/staring-code

Adding starting code.
Add travis badge to README
Simplifying package definition.

And making the system consistent across files.
Leap-year: simpler and consistent package definition.
Grains: simpler and consistent package definition.
Gigasecond: simpler and consistent package definition.
Bob: simpler and consistent package definition.
Bob: simpler and consistent package definition.
Robot-name: simpler and consistent package definition.

Chose not to include stub function definitions because, as the example
file shows, this could be done with classes and accessor methods.
Providing stub functions would drive the student to a particular
solution instead of leaving the solution up to them.
Word-count: simpler and consistent package definition.
Grade-school: simpler and consistent package definition.
Phone-number: simpler and consistent package definition.
ETL: simpler and consistent package definition.
Beer-song: simpler and consistent package definition.