diff --git a/README.md b/README.md
index fdde77f..fd7c0bf 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # bimg [![Build Status](https://travis-ci.org/h2non/bimg.png)](https://travis-ci.org/h2non/bimg) [![GitHub release](https://img.shields.io/github/tag/h2non/bimg.svg)](https://github.com/h2non/bimg/releases) [![GoDoc](https://godoc.org/github.com/h2non/bimg?status.png)](https://godoc.org/github.com/h2non/bimg) [![Coverage Status](https://coveralls.io/repos/h2non/bimg/badge.svg?branch=master)](https://coveralls.io/r/h2non/bimg?branch=master)
 
-Small Go library for blazing fast and efficient image processing based on [libvips](https://github.com/jcupitt/libvips) using C bindings.
+Small [Go](http://golang.org) library for blazing fast and efficient image processing based on [libvips](https://github.com/jcupitt/libvips) using C bindings. It provides a clean, simple and fluent [API](#examples) in pure Go.
 
 bimg is designed to be a small and efficient library with a generic and useful set of features. 
 It uses internally libvips, which requires a [low memory footprint](http://www.vips.ecs.soton.ac.uk/index.php?title=Speed_and_Memory_Use) 
@@ -42,6 +42,7 @@ The [install script](https://github.com/lovell/sharp/blob/master/preinstall.sh)
 - Enlarge
 - Crop
 - Rotate
+- Auto-rotate (based on EXIF orientation)
 - Flip
 - Flop
 - Thumbnail
diff --git a/type_test.go b/type_test.go
index 4da508d..534f738 100644
--- a/type_test.go
+++ b/type_test.go
@@ -48,3 +48,35 @@ func TestDeterminateImageTypeName(t *testing.T) {
 		}
 	}
 }
+
+func TestIsTypeSupported(t *testing.T) {
+	types := []struct {
+		name ImageType
+	}{
+		{JPEG}, {PNG}, {WEBP},
+	}
+
+	for _, n := range types {
+		if IsTypeSupported(n.name) == false {
+			t.Fatal("Image type is not valid")
+		}
+	}
+}
+
+func TestIsTypeNameSupported(t *testing.T) {
+	types := []struct {
+		name     string
+		expected bool
+	}{
+		{"jpg", true},
+		{"png", true},
+		{"webp", true},
+		{"gif", false},
+	}
+
+	for _, n := range types {
+		if IsTypeNameSupported(n.name) != n.expected {
+			t.Fatal("Image type is not valid")
+		}
+	}
+}