Add snapcraft support (#321)

* Add snap yaml file

* Add snapcraft into readme document

* Add more snap info

* Set git ignore for *.snap

* snapcraft can be release

* fix the description in the snapcraft config file

.gitignore

@@ -29,3 +29,6 @@ app/cmd/test.yaml
 app/i18n/bindata.go
 app/i18n/jcli/zh_CN/LC_MESSAGES/jcli.mo
 app/i18n/jcli.pot
+
+# snap package
+*.snap

README-zh.md

@@ -56,6 +56,7 @@ sudo mv jcli /usr/local/bin/
 * [GoFish](https://gofi.sh/) 的用户可以使用命令 `gofish install jcli` 来安装
 * [Scoop](https://scoop.sh/) 的用户可以使用命令 `scoop install jcli` 来安装
 * [Chocolatey](https://chocolatey.org/packages/jcli) 的用户可以使用命令 `choco install jcli` 来安装
+* [Snapcraft](https://snapcraft.io/jcli) 的用户可以使用命令 `sudo snap install jcli` 来安装
 
 了解更多[如何下载 jcli](doc/download-zh.md).
 你可以从[这里](http://somsubhra.com/github-release-stats/?username=jenkins-zh&repository=jenkins-cli)获取下载的统计信息。

README.md

@@ -58,6 +58,7 @@ Here are other package managers:
 * [GoFish](https://gofi.sh/) users can use `gofish install jcli`
 * [Scoop](https://scoop.sh/) users can use `scoop install jcli`
 * [Chocolatey](https://chocolatey.org/packages/jcli) users can use `choco install jcli`
+* [Snapcraft](https://snapcraft.io/jcli) users can use `sudo snap install jcli`
 
 See more about [how to download jcli](doc/download.md).
 You can find the download details [from here](http://somsubhra.com/github-release-stats/?username=jenkins-zh&repository=jenkins-cli).

app/cmd/shell_test.go

@@ -20,7 +20,11 @@ var _ = Describe("shell command", func() {
 		ctrl = gomock.NewController(GinkgoT())
 		rootCmd.SetArgs([]string{})
 		rootOptions.Jenkins = ""
-		rootOptions.ConfigFile = "test.yaml"
+
+		tempFile, err := ioutil.TempFile("", "example")
+		Expect(err).To(BeNil())
+
+		rootOptions.ConfigFile = tempFile.Name()
 		shellOptions.ExecContext = util.FakeExecCommandSuccess
 	})
 

snapcraft.yaml

+name: jcli
+version: v0.0.25
+summary: Jenkins CLI allows you manage your Jenkins in an easy way.
+description: |
+  Jenkins CLI allows you manage your Jenkins in an easy way. No matter if you're a plugin developer, administrator or just a regular user, it is made for you!
+
+confinement: strict
+base: core18
+license: MIT
+grade: stable
+
+parts:
+  jcli:
+    plugin: dump
+    source: .
+    organize:
+      jcli: bin/linux
+apps:
+  jcli:
+    command: bin/linux/jcli