Fixed README.md

Removed trailing ` from **npm install -g bower gulp nodemon** instruction.
Merge pull request #5 from TimMurphy/patch-1

thanks
Merge pull request #6 from johnpapa/develop

better specs, better gulp, and bard.js
Merge pull request #7 from johnpapa/develop

updated gulp task readme
Merge pull request #8 from johnpapa/develop

serve-specs task in readme
Merge pull request #9 from johnpapa/develop

lodash abd gulp fixes
Fixed top nav image src
Merge pull request #10 from JeroenNoten/patch-1

Fixed top nav image src