Release Candidate 2.0

* Returning an interface here makes it rather difficult to work with the MailgunImpl struct
* Changed README send example to a valid program
* Removed the need for public api from Mailgun interface and created new Validator interface
* Simplified NewMailgun() and NewMailgunFromEnv()
* Removed NewMailgunImpl() test
* Added support for mailing list events and disabled some check in event tests
* test only 1.8, running concurrent tests causes issues
* .travis.yml cleanup
* renamed Api to API, removed campaigns
* Load ENV variables from .env file

.env

@@ -0,0 +1,16 @@
+# Set the following values and any others 
+# you need loaded into the ENV. You can then
+# access the variables by using os.Getenv("KEY")
+# See https://github.com/gobuffalo/envy
+# Format is: 
+# Key=Value
+# Required for Mailgun to function:
+# MG_API_KEY=your-api-key
+# MG_DOMAIN=your-domain
+# MG_PUBLIC_API_KEY=your-public-key
+# MG_URL="https://api.mailgun.net/v3"
+
+MG_API_KEY=123456
+MG_DOMAIN=crazydomainname.lol
+MG_PUBLIC_API_KEY=cflat
+MG_URL="https://api.mailgun.net/v3"

.gitignore

@@ -1,2 +1,3 @@
 .DS_Store
 .idea/
+cmd/mailgun/mailgun

.travis.yml

@@ -1,14 +1,4 @@
 language: go
 
 go:
-  - 1.6.x
-  - 1.7.x
-  - 1.8.x
-
-sudo: true
-
-before_script:
-  - sudo apt-get install haveged && sudo service haveged start
-
-script:
-  - make
+  - 1.9.x

Gopkg.toml

@@ -0,0 +1,62 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# 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"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/drhodes/golorem"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/facebookgo/ensure"
+
+[[constraint]]
+  name = "github.com/gobuffalo/envy"
+  version = "1.6.4"
+
+[[constraint]]
+  name = "github.com/onsi/ginkgo"
+  version = "1.6.0"
+
+[[constraint]]
+  name = "github.com/onsi/gomega"
+  version = "1.4.2"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/pkg/errors"
+
+[[constraint]]
+  name = "github.com/thrawn01/args"
+  version = "0.3.0"
+
+[[override]]
+  name = "gopkg.in/fsnotify.v1"
+  source = "https://github.com/fsnotify/fsnotify.git"
+
+[prune]
+  go-tests = true
+  unused-packages = true