feat(command): add dev command (#138)

Author: ayushmanchhabra

README.md

@@ -13,13 +13,43 @@ Command line interface for building NW.js apps
 Create a Vanilla JavaScript project.
 
 ```shell
-nw create MyApp
+└─$ nw-cli create --help
+Usage: nw-cli create [options] <name>
+
+Arguments:
+  name                   app name
+
+Options:
+  --template <template>  template name (default: "vanilla-js")
+  --outDir <dir>         output directory (default: ".")
+  -h, --help             display help for command
 ```
 
-Choose your template (defaults to `vanilla-js`) and out directory (defaults to `.`).
+### dev
+
+Run application in development mode.
 
 ```shell
-nw create --template=react-js --outDir=/path/to/project/dir MyApp
+└─$ nw-cli dev --help
+Usage: nw-cli dev [options]
+
+Run app in development mode
+
+Options:
+  --version <version>      NW.js version (default: "latest")
+  --flavor <flavor>        NW.js flavor (default: "normal")
+  --platform <platform>    NW.js platform (default: "linux")
+  --arch <arch>            NW.js architecture (default: "x64")
+  --downloadUrl <string>   Download URL (default: "https://dl.nwjs.io")
+  --manifestUrl <string>   Manifest URL (default: "https://nwjs.io/versions.json")
+  --cacheDir <dir>         Cache directory (default: "/home/localghost/.nw-cli/cache")
+  --cache <boolean>        Cache binaries (default: true)
+  --ffmpeg <boolean>       Download community ffmpeg (default: false)
+  --nativeAddon <boolean>  Download NW.js Node headers (default: false)
+  --shaSum <boolean>       Verify SHASUM (default: true)
+  --srcDir <dir>           Project source directory (default: ".")
+  --argv <item...>         Command line arguments (default: [])
+  -h, --help               display help for command
 ```
 
 > Note: If you find a template is missing, feel free to open an issue or pull request.