add word-count assignment to elixir track
add anagram assignment to elixir track
improve the example solution to elixir:bob.
add beer song elixir assignment
add nucleotide count assignment to elixir track
add rna-transcription assignment to elixir track
add point-mutations assignment to elixir track
add phone number exercise to elixir track
add grade-school to elixir track
Add leap year to elixir track
add etl assignment to elixir track
use characters for more clarity
add space-age assignment to elixir track
Fix missing/borked assignments in ruby and elixir paths
add elixir/meetup
Maintain consistency with the README and specs for bob
add elixir/grains
Adding more tests for silence to Bob

The Elixir suite case doesn't current check for nil, while the Ruby test
suite demands that nil be understood as a form of silence. This adds a
test to the Elixir quite to check for nil.

It also adds a test case for a different kind of "empty" string: one
consisting solely of spaces, such as "    ".  Both of these test suites
will now check to see that is correctly interpreted as silence rather
than shouting (because "  ".upcase == "  ").
Add elixir/gigasecond
add elixir/triangle