add travis and readme.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

.travis.yml

@@ -0,0 +1,22 @@
+language: go
+sudo: false
+
+go:
+  - 1.5.4
+  - 1.6.4
+  - 1.7.4
+  - tip
+
+script:
+  - go test -v -covermode=atomic -coverprofile=coverage.out
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
+
+notifications:
+  webhooks:
+    urls:
+      - https://webhooks.gitter.im/e/acc2c57482e94b44f557
+    on_success: change
+    on_failure: always
+    on_start: false

README.md

@@ -0,0 +1,11 @@
+# GZIP gin's middleware
+
+[![Build Status](https://travis-ci.org/gin-contrib/gzip.svg)](https://travis-ci.org/gin-contrib/gzip)
+[![codecov](https://codecov.io/gh/gin-contrib/gzip/branch/master/graph/badge.svg)](https://codecov.io/gh/gin-contrib/gzip)
+[![Go Report Card](https://goreportcard.com/badge/github.com/gin-contrib/gzip)](https://goreportcard.com/report/github.com/gin-contrib/gzip)
+[![GoDoc](https://godoc.org/github.com/gin-contrib/gzip?status.svg)](https://godoc.org/github.com/gin-contrib/gzip)
+[![Join the chat at https://gitter.im/gin-gonic/gin](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/gin-gonic/gin)
+
+Gin middleware to enable `GZIP` support.
+
+## Usage