Change link to guide for firefox location bar search

On the old page you would have to scroll down to `Tips & Tricks` and then click the link that points to the new page.
Merge pull request #110 from r3Fuze/patch-1

Change link to guide for firefox location bar search
Update gem dependencies
Update D3.js documentation (3.4.9)
Update Sass documentation (3.3.9)
Update Express.js documentation (4.4.5)
Update Redis documentation (2.8.12)
Update Less documentation (1.7.3)
Update Git documentation (2.0.1)
Update Go documentation (1.3.0)
Update Laravel documentation (4.2.0)
Add Chai documentation
Add Sinon documentation