JS exercism

##Leap
My code: [here](http://exercism.io/submissions/8c56e59a0a2b47189f3d771527b60d0e)
* Responder #1 ([here](http://exercism.io/submissions/2aaa103d3df4428485950574c056d645)) 
- uses a single line && || operation.  very nice versus my if else

* Responder #2 ([here](http://exercism.io/submissions/3641b7941aa9403c8633e8d420bbc317)) 
- very similar to mine.  if, else if, else for every possibility

* Responder #3 ([here](http://exercism.io/submissions/f3609179f03649d9bfcba070b24277ba)) 
- again, similar to mine

* Responder #4 ([here](http://exercism.io/submissions/89610e20a7074240b60265819e275dd7)) 
- same, but combines 2 conditions into one line with an && !=

* Responder #5 ([here](http://exercism.io/submissions/f2ea158c833f40589531bb90a0933cfb)) 
- another combined and/or statement

##Hamming
My code: [here](http://exercism.io/submissions/463e94cdfd304bd68cb930ce624f3d19)
* Responder #1 ([here](http://exercism.io/submissions/ab931374671545d59ecd5aa03886ae35)) 
- very similar to mine, slightly different order

* Responder #2 ([here](http://exercism.io/submissions/6209ea3ea79c49539bddb573f9b0b211)) 
- this removes the else clause, since the error is thrown at the top if necessary it breaks out or continues on to finish the rest, slightly cleaner

* Responder #3 ([here](http://exercism.io/submissions/2385e2744d884d89955a609f17f15fdc)) 
- same as above

* Responder #4 ([here](http://exercism.io/submissions/b4d061c8c1084d5684e06d29cb2f310f)) 
- same as above

* Responder #5 ([here](http://exercism.io/submissions/1154b1c4ad154c229e4be03251a83f92)) 
- everything is broken out, it seems a lot more complicated to read and understand this way.  Much larger as well

##RNA Transcription
My code: [here](http://exercism.io/submissions/6c0dee3573d947e6b3ded18622a0b4e2)
* Responder #1 ([here](http://exercism.io/submissions/b5feac66f06c48c39998424195c8cce4)) 
- uses an if/else if strategy.  slightly longer and muddied

* Responder #2 ([here](http://exercism.io/submissions/566eff6a1a9443fc98966090ee3f88a0)) 
- similar to above, however just has several if statements for each possibility, would hypothetically be wasteful of processing to not break out when it's found the correct rna type

* Responder #3 ([here](http://exercism.io/submissions/d6b85dcc868a458e8bb32657f226882b)) 
- same as mine, but uses a symbol(?) instead of string for key identifier in the hash

* Responder #4 ([here](http://exercism.io/submissions/743ea3ede96140f7a5b8de1654a8e7c0)) 
- same as mine, though he creates hash inside block, seems unnecessary, global variable would be fine if not better choice

* Responder #5 ([here](http://exercism.io/submissions/ad0fc5a05271474a8e751b517c5c9d35)) 
- similar approach, though broke the logic inside the block down a little differently, maybe didn't realize that strings had index