Merge pull request #98 from ngoldman/dev

bug fix & zoom feature request
building again after moving global vars into new geobinServer struct. Fixes #75
Merge branch 'dev' of https://github.com/esripdx/geobin.io into tests
make config a server field, mock object stubs for tests
* rate limit now part of config
* consolidate middleware into geobinserver
* rediswrapper and RedisClient interface updates
* geobinserver tests passing using top level routing etc
* MockRedis test object
* make run updated
fixes #74
cleanup
tweak
Merge pull request #100 from courtf/tests

Fixes for issues #74 and #75
break intro content into two panels