Erlang Path

This is a placeholder issue for keeping track of porting assignments to Erlang, or noting why they may not be applicable.

- [x] bob
- [x] word-count
- [x] anagram
- [x] beer-song
- [x] nucleotide-count
- [x] rna-transcription
- [x] point-mutations
- [x] phone-number
- [ ] grade-school
- [ ] robot-name (maybe not applicable, since Erlang is immutable?)
- [ ] leap
- [x] etl
- [ ] meetup
- [ ] space-age
- [ ] grains
- [ ] gigasecond
- [ ] triangle
- [ ] scrabble-score
- [ ] roman-numerals
- [ ] binary
- [ ] prime-factors
- [ ] raindrops
- [x] allergies
- [ ] strain
- [ ] atbash-cipher
- [ ] accumulate
- [ ] crypto-square
- [ ] trinary
- [ ] sieve
- [ ] simple-cipher
- [ ] octal
- [x] luhn
- [ ] pig-latin
- [ ] pythagorean-triplet
- [ ] series
- [ ] difference-of-squares
- [ ] secret-handshake
- [ ] linked-list
- [ ] wordy
- [ ] hexadecimal
- [ ] largest-series-product
- [ ] kindergarden-garden
- [ ] binary-search-tree
- [ ] matrix
- [ ] robot 
- [ ] nth-prime
- [ ] palindrome-products
- [ ] pascals-triangle
- [ ] say
- [ ] sum-of-multiples
- [ ] queen-attack
- [ ] saddle-points
- [ ] ocr-numbers