js/robot-simulator
skip all but first test in js/robot-simulator
add js/robot-simulator to curriculum
JS ETL spec typo.
Merge pull request #870 from connermcd/js-etl-spec

JS ETL spec typo.
JS ETL spec wrong type.
Merge pull request #871 from connermcd/js-etl-spec

JS ETL spec wrong type.
Use session store rather than cookies.

I naively thought that setting a session secret would encrypt the
cookie. That's not the case.
Actually use the session for logging in and out
Ruby accumulate spec typo.
Merge pull request #872 from connermcd/rb-accumulate-spec

Ruby accumulate spec typo.
Merge pull request #873 from DarthStrom/robot-simulator

Add javascript robot-simulator exercise
Remove the reference to the ruby gem on the homepage
Tweak hamming example
rust rna-transcription - rust 0.8 no longer has map_chars, use replace instead
rust - check exercises automatically with travis (rust 0.8)
rust - word-count exercise
rust anagram
add a RustCurriculum class
rust beer-song