cleaned up SQL--this means that now on our app expects only epsg:4326 input districts
input 4326 shapefile for council districts--use ogr2ogr to set inputs to this epsg in future
new shapefile data in epsg 4326
update readme to reflect changes in sql
Removes unnecessary (and bug-causing) geogrphic transforms

- Previous commits corrected the geographic reference system for council districts
- We no longer need to perform this transform, and in fact, before this commit getDistricts()
  wasn't returning the Mesa districts in the correct reference system, so they weren't getting
  the map in Mesa
Removed unnecessary/unwanted transform

Below is before (wrong) and after (correct) results

rails c
irb(main):001:0> CouncilDistrict.point_in_district 1
   (17.8ms)  WITH results as (
 SELECT ST_Transform(
 ST_SetSRID(
 ST_PointOnSurface(geom),
 2278
 ),
 4326
 ) as point from council_districts where id = 1
 ) SELECT ST_X(point) as lng, ST_Y(point) as lat from results
   (17.8ms)  WITH results as (
 SELECT ST_Transform(
 ST_SetSRID(
 ST_PointOnSurface(geom),
 2278
 ),
 4326
 ) as point from council_districts where id = 1
 ) SELECT ST_X(point) as lng, ST_Y(point) as lat from results
=> {"lng"=>-103.518289506882, "lat"=>-6.14569074207964}

irb(main):002:0>

$ rails c
Loading development environment (Rails 4.0.2)
irb(main):001:0> CouncilDistrict.point_in_district 1
   (8.2ms)  WITH results as (
 SELECT ST_PointOnSurface(geom) as point from council_districts where id = 1
 ) SELECT ST_X(point) as lng, ST_Y(point) as lat from results
   (8.2ms)  WITH results as (
 SELECT ST_PointOnSurface(geom) as point from council_districts where id = 1
 ) SELECT ST_X(point) as lng, ST_Y(point) as lat from results
=> {"lng"=>-111.800696394254, "lat"=>33.4531589352351}
removed unnecessary coord sys vars and made better use of one

- we no longer need to transform from one coord sys to another, so these other vars aren't needed
- instead of hard coding the reference system ID in the sql we can make use of a variable (safe since not from a user)
whitespace/newline changes for readability
Merge pull request #17 from codeforamerica/chore/cleanup-sql

Chore: cleanup sql