Update geocoder gem to version 1.4.9

The Freegeoip service that's the default in our current version of the
geocoder gem has been discontinued. Geocoder now uses IPInfo.io as its
default.

Update the geocoder version to 1.4.9 to use the new default.

#84

Author: ruralocity

Gemfile.lock

@@ -81,7 +81,7 @@ GEM
     faker (1.7.3)
       i18n (~> 0.5)
     ffi (1.9.18)
-    geocoder (1.4.4)
+    geocoder (1.4.9)
     globalid (0.4.0)
       activesupport (>= 4.2.0)
     i18n (0.8.1)