Fix for issue #41

Added a && short-circuit check so no null/undefined reference error accrues.
Merge pull request #43 from MattiasFestin/patch-1

Fix for issue #41
0.4.3 Bump version.
Modify readme.
Adding http: to fonts.googleapis.com link href

Original href without leading `http:` does NOT work on local computers
Merge pull request #49 from blackeyedboy/patch-1

Adding http: to fonts.googleapis.com link href