Fixing the readme to show the proper way to run the tests.  Also updating the misspelling of the word authentication.
Fixing the readme to show the proper way to run the tests.  Also updating the misspelling of the word authentication.

apiaryio/node-github,trektech/test1,onesfreedom/node-github,AkashSC/MyRepoDOMO,tempbottle/node-github,jamestalmage/node-github,kaizensoze/node-github,kstarsinic/node-github,codeschool/node-github,F1LT3R/node-github,Phanatic/node-github,Gerhut/node-github,dfarr/node-github,kaizensoze/github4,blamattina/node-github,reviewninja/node-github,ludovicderochethales/node-github,Dica-Developer/github-js,cbargren/github-xhr,meetearnest/node-github,ekristen/node-github,eistrati/node-github