Update coffeelint to 2.1.0
Update coffeelint to 2.1.0

There was a warning when running `npm install` in Action View:

    coffee-script@1.11.1: CoffeeScript on NPM has moved to
    "coffeescript" (no hyphen)

We are not requiring `coffee-script` explicitly, but `coffeelint` does.
The latest version, 2.1.0, already fix the dependency package name, so
we should upgrade to it to suppress the warning.

repinel/rails,rails/rails,yalab/rails,yawboakye/rails,kmcphillips/rails,mohitnatoo/rails,utilum/rails,flanger001/rails,joonyou/rails,illacceptanything/illacceptanything,repinel/rails,bogdanvlviv/rails,kddeisz/rails,eileencodes/rails,lcreid/rails,iainbeeston/rails,eileencodes/rails,rails/rails,Envek/rails,yawboakye/rails,schuetzm/rails,illacceptanything/illacceptanything,tjschuck/rails,Edouard-chin/rails,kddeisz/rails,georgeclaghorn/rails,lcreid/rails,utilum/rails,yhirano55/rails,starknx/rails,illacceptanything/illacceptanything,iainbeeston/rails,arunagw/rails,baerjam/rails,betesh/rails,vipulnsward/rails,arunagw/rails,bogdanvlviv/rails,arunagw/rails,yawboakye/rails,Vasfed/rails,MSP-Greg/rails,BlakeWilliams/rails,starknx/rails,utilum/rails,prathamesh-sonpatki/rails,Vasfed/rails,gauravtiwari/rails,mechanicles/rails,georgeclaghorn/rails,rafaelfranca/omg-rails,prathamesh-sonpatki/rails,tgxworld/rails,mohitnatoo/rails,yalab/rails,repinel/rails,eileencodes/rails,illacceptanything/illacceptanything,Vasfed/rails,joonyou/rails,jeremy/rails,kmcphillips/rails,Erol/rails,illacceptanything/illacceptanything,notapatch/rails,yahonda/rails,georgeclaghorn/rails,yahonda/rails,tjschuck/rails,betesh/rails,schuetzm/rails,illacceptanything/illacceptanything,lcreid/rails,yalab/rails,starknx/rails,printercu/rails,EmmaB/rails-1,flanger001/rails,notapatch/rails,gauravtiwari/rails,kmcphillips/rails,Edouard-chin/rails,iainbeeston/rails,yahonda/rails,jeremy/rails,Erol/rails,Edouard-chin/rails,eileencodes/rails,flanger001/rails,mechanicles/rails,jeremy/rails,kddeisz/rails,joonyou/rails,notapatch/rails,Vasfed/rails,joonyou/rails,Stellenticket/rails,Envek/rails,prathamesh-sonpatki/rails,iainbeeston/rails,schuetzm/rails,palkan/rails,mechanicles/rails,fabianoleittes/rails,tgxworld/rails,Stellenticket/rails,vipulnsward/rails,kmcphillips/rails,printercu/rails,flanger001/rails,utilum/rails,MSP-Greg/rails,esparta/rails,illacceptanything/illacceptanything,rafaelfranca/omg-rails,gauravtiwari/rails,shioyama/rails,yalab/rails,baerjam/rails,yahonda/rails,BlakeWilliams/rails,tgxworld/rails,printercu/rails,Erol/rails,prathamesh-sonpatki/rails,rails/rails,baerjam/rails,Stellenticket/rails,vipulnsward/rails,yawboakye/rails,tjschuck/rails,palkan/rails,yhirano55/rails,esparta/rails,illacceptanything/illacceptanything,fabianoleittes/rails,arunagw/rails,Envek/rails,EmmaB/rails-1,Edouard-chin/rails,vipulnsward/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,palkan/rails,yhirano55/rails,mohitnatoo/rails,notapatch/rails,tgxworld/rails,repinel/rails,illacceptanything/illacceptanything,kddeisz/rails,illacceptanything/illacceptanything,mechanicles/rails,yhirano55/rails,mohitnatoo/rails,schuetzm/rails,betesh/rails,printercu/rails,bogdanvlviv/rails,shioyama/rails,lcreid/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,rails/rails,MSP-Greg/rails,palkan/rails,rafaelfranca/omg-rails,betesh/rails,Erol/rails,MSP-Greg/rails,EmmaB/rails-1,shioyama/rails,baerjam/rails,Envek/rails,esparta/rails,esparta/rails,fabianoleittes/rails,georgeclaghorn/rails,jeremy/rails,BlakeWilliams/rails,bogdanvlviv/rails,tjschuck/rails,Stellenticket/rails,illacceptanything/illacceptanything,shioyama/rails,fabianoleittes/rails,BlakeWilliams/rails