README.md in spherical_mercator-1.1.0 vs README.md in spherical_mercator-1.1.1

@@ -1,9 +1,8 @@
 # Ruby port of Mapbox Spherical Mercator
 [![Gem Version](https://badge.fury.io/rb/spherical_mercator.svg)](http://badge.fury.io/rb/spherical_mercator)
 [![Build Status](https://travis-ci.org/nbulaj/spherical_mercator.svg?branch=master)](https://travis-ci.org/nbulaj/spherical_mercator)
-[![Dependency Status](https://gemnasium.com/nbulaj/spherical_mercator.svg)](https://gemnasium.com/nbulaj/spherical_mercator)
 [![Coverage Status](https://coveralls.io/repos/github/nbulaj/spherical_mercator/badge.svg)](https://coveralls.io/github/nbulaj/spherical_mercator)
 [![License](http://img.shields.io/badge/license-MIT-brightgreen.svg)](#license)
 
 Spherical Mercator gem is a port of [Mapbox sphericalmercator JS lib](https://github.com/mapbox/sphericalmercator) that provides projection math
 for converting between mercator meters, screen pixels (of 256x256 or configurable-size tiles), and latitude/longitude.
@@ -30,15 +29,19 @@
 `[x, y]`.
 
 ```ruby
 # By default, precomputes up to z30
 mercator = SphericalMercator.new(size: 256)
+# Whether to round pixel values at integer zoom levels. Defaults to true.
+mercator = SphericalMercator.new(round: false)
 ```
 
 ### `px(lon_lat, zoom)`
 
 Convert lon, lat to screen pixel x, y from 0, 0 origin, at a certain zoom level.
 The inverse of `ll`
+
+Screen pixel values are rounded, unless the zoom level is a floating point value. To disable rounding on integer zoom levels, specify `round: false` when creating the SphericalMercator.
 
 ### `ll(px, zoom)`
 
 Convert screen pixel value to lon, lat, at a certain zoom level. The inverse
 of `px`