Feat/go dep (matcornic#16)

* feat: add go dep

.gitignore

@@ -25,3 +25,4 @@ _testmain.go
 
 .DS_Store
 coverage.txt
+vendor/

.travis.yml

@@ -1,20 +1,19 @@
 language: go
 
 go:
-  - 1.6
   - 1.7
   - 1.8
   - master
 
 install:
-- go get ./...
-- go get -t ./...
+- go get -u github.com/golang/dep/cmd/dep
+- dep ensure
 - go get -u github.com/alecthomas/gometalinter
 - gometalinter -u -i -f
 
 script:
 - go test -race -coverprofile=coverage.txt -covermode=atomic
-- gometalinter --config=./gometalinter.json ./...
+- gometalinter --vendor --config=./gometalinter.json ./...
 
 after_success:
 - bash <(curl -s https://codecov.io/bash)

Gopkg.toml

@@ -0,0 +1,42 @@
+
+# Gopkg.toml example
+#
+# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#  name = "github.com/x/y"
+#  version = "2.4.0"
+
+
+[[constraint]]
+  name = "github.com/Masterminds/sprig"
+  version = "2.12.0"
+
+[[constraint]]
+  name = "github.com/imdario/mergo"
+  version = "0.2.2"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/jaytaylor/html2text"
+
+[[constraint]]
+  name = "github.com/russross/blackfriday"
+  branch = "master"
+
+[[constraint]]
+  name = "github.com/stretchr/testify"
+  version = "1.1.4"