Fixes "Unresolvable cycle detected" error

[markotom]

Just fixes this error when trying to install:

$ npm i oauth2-server-restify --save
npm WARN package.json papi-rest@0.0.1 No license field.
npm ERR! Darwin 14.0.0
npm ERR! argv "node" "/usr/local/bin/npm" "i" "oauth2-server-restify" "--save"
npm ERR! node v0.12.5
npm ERR! npm  v2.11.3
npm ERR! code ECYCLE

npm ERR! cycle Unresolvable cycle detected
npm ERR! cycle While installing: oauth2-server-restify@2.3.2
npm ERR! cycle Found a pathological dependency case that npm cannot solve.
npm ERR! cycle Please report this to the package author.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/marcogodinez/dev/sprint2/papi-rest/npm-debug.log