minor updates to readme, docs, travis-ci

.travis.yml

@@ -1,12 +1,9 @@
 language: go
-
-sudo: false
-
 go:
-  - "1.7"
-  - "1.8"
-  - "1.9"
-  - "1.10"
+  - "1.7.x"
+  - "1.8.x"
+  - "1.9.x"
+  - "1.10.x"
 
 before_install:
   - go get github.com/mattn/goveralls

README.md

@@ -2,9 +2,10 @@
 
 [![GoDoc](https://godoc.org/github.com/disintegration/imaging?status.svg)](https://godoc.org/github.com/disintegration/imaging)
 [![Build Status](https://travis-ci.org/disintegration/imaging.svg?branch=master)](https://travis-ci.org/disintegration/imaging)
-[![Coverage Status](https://coveralls.io/repos/github/disintegration/imaging/badge.svg?branch=master)](https://coveralls.io/github/disintegration/imaging?branch=master)
+[![Coverage Status](https://coveralls.io/repos/github/disintegration/imaging/badge.svg?branch=master&service=github)](https://coveralls.io/github/disintegration/imaging?branch=master)
+[![Go Report Card](https://goreportcard.com/badge/github.com/disintegration/imaging)](https://goreportcard.com/report/github.com/disintegration/imaging)
 
-Package imaging provides basic imaging processing functions (resize, rotate, crop, brightness/contrast adjustments, etc.).
+Package imaging provides basic image processing functions (resize, rotate, crop, brightness/contrast adjustments, etc.).
 
 All the image processing functions provided by the package accept any image type that implements `image.Image` interface
 as an input, and return a new image of `*image.NRGBA` type (32bit RGBA colors, not premultiplied by alpha).

adjust.go

@@ -51,7 +51,7 @@ func Invert(img image.Image) *image.NRGBA {
 
 // AdjustContrast changes the contrast of the image using the percentage parameter and returns the adjusted image.
 // The percentage must be in range (-100, 100). The percentage = 0 gives the original image.
-// The percentage = -100 gives solid grey image.
+// The percentage = -100 gives solid gray image.
 //
 // Examples:
 //

doc.go

@@ -1,5 +1,5 @@
 /*
-Package imaging provides basic imaging processing functions (resize, rotate, crop, brightness/contrast adjustments, etc.).
+Package imaging provides basic image processing functions (resize, rotate, crop, brightness/contrast adjustments, etc.).
 
 All the image processing functions provided by the package accept any image type that implements image.Image interface
 as an input, and return a new image of *image.NRGBA type (32bit RGBA colors, not premultiplied by alpha).