Update coffee-script to 1.8.0
Update coffee-script to 1.8.0

coffee-script is at 1.8.0 now. Updating jest's dependency version should fix warnings that look like `npm WARN unmet dependency node_modules/jest-cli requires coffee-script@'1.7.1' but will load` when it is used in a package that depends oncoffee-script 1.8.0.

Here is the CS 1.8.0 change log: http://coffeescript.org/#changelog

Tested by running `npm test` and `cd examples/coffeescript; npm test`.

ide/jest,bluebridgedigital/jest,vjeux/jest,facebook/jest,ChiMarvine/jest,blainekasten/jest,Daniel15/jest,yungsters/jest,skovhus/jest,alvinsj/jest,Daniel15/jest,createbang/jest,skovhus/jest,dylanham/jest,aaron-goshine/jest,aaron-goshine/jest,jedverity/jest,M6Web/jest,M6Web/jest,sampepose/jest,gagoman/jest,gagoman/jest,createbang/jest,tomv564/jest,StatusPage/jest,securingsincity/jest-browser-support,dylanham/jest,cpojer/jest,ChiMarvine/jest,securingsincity/jest-browser-support,securingsincity/jest-browser-support,bauerca/jest,wmyers/jest,xeneta/jest,aaron-goshine/jest,rpowis/jest,blainekasten/jest,ncuillery/jest,machadoum/jest,AyseAkr/jest,skovhus/jest,razh/jest,drd/jest,vjeux/jest,skawian/jest,silentroach/jest,bookman25/jest,lokinell/jest,ide/jest,BenoitZugmeyer/jest,razh/jest,silentroach/jest,cesarandreu/jest,machadoum/jest,facebook/jest,cpojer/jest,sampepose/jest,IveWong/jest,mpontus/jest,mpontus/jest,jsdf/jest,aduyng/jest,drd/jest,tomv564/jest,AyseAkr/jest,ide/jest,facebook/jest,jsdf/jest,xeneta/jest,BenoitZugmeyer/jest,mpontus/jest,bluebridgedigital/jest,yungsters/jest,aduyng/jest,jedverity/jest,IveWong/jest,skawian/jest,carmenlau/jest,StatusPage/jest,cesarandreu/jest,Daniel15/jest,bookman25/jest,cpojer/jest,wmyers/jest,rpowis/jest,lokinell/jest,siddhartharay007/jest,siddhartharay007/jest,bauerca/jest,blainekasten/jest,alvinsj/jest,ncuillery/jest,bookman25/jest,carmenlau/jest