No Sketch application found.
Hi guys, that's happens when I try to run `yarn start` or `npm start` on a plugin.

```
➜ yarn start
yarn run v1.9.4
$ skpm-build --watch --run
🖨  Copied src/manifest.json in 6ms
🛠  Copied assets/placeholder.png
⛏  Copied assets/icon.png
No Sketch application found.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
```

Below the log:

```
0 info it worked if it ends with ok
1 verbose cli [ '/Users/federicovitale/.nvm/versions/node/v10.9.0/bin/node',
1 verbose cli   '/Users/federicovitale/.nvm/versions/node/v10.9.0/bin/npm',
1 verbose cli   'run',
1 verbose cli   'start' ]
2 info using npm@6.2.0
3 info using node@v10.9.0
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle unsplash@1.0.1~prestart: unsplash@1.0.1
6 info lifecycle unsplash@1.0.1~start: unsplash@1.0.1
7 verbose lifecycle unsplash@1.0.1~start: unsafe-perm in lifecycle true
8 verbose lifecycle unsplash@1.0.1~start: PATH: /Users/federicovitale/.nvm/versions/node/v10.9.0/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/Users/federicovitale/Desktop/unsplash-sketchplugin/node_modules/.bin:/Users/federicovitale/.nvm/versions/node/v10.9.0/bin:/Users/federicovitale/.yarn/bin:/Users/federicovitale/.config/yarn/global/node_modules/.bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
9 verbose lifecycle unsplash@1.0.1~start: CWD: /Users/federicovitale/Desktop/unsplash-sketchplugin
10 silly lifecycle unsplash@1.0.1~start: Args: [ '-c', 'skpm-build --watch --run' ]
11 silly lifecycle unsplash@1.0.1~start: Returned: code: 1  signal: null
12 info lifecycle unsplash@1.0.1~start: Failed to exec start script
13 verbose stack Error: unsplash@1.0.1 start: `skpm-build --watch --run`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (/Users/federicovitale/.nvm/versions/node/v10.9.0/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:304:16)
13 verbose stack     at EventEmitter.emit (events.js:182:13)
13 verbose stack     at ChildProcess.<anonymous> (/Users/federicovitale/.nvm/versions/node/v10.9.0/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:182:13)
13 verbose stack     at maybeClose (internal/child_process.js:961:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:250:5)
14 verbose pkgid unsplash@1.0.1
15 verbose cwd /Users/federicovitale/Desktop/unsplash-sketchplugin
16 verbose Darwin 18.0.0
17 verbose argv "/Users/federicovitale/.nvm/versions/node/v10.9.0/bin/node" "/Users/federicovitale/.nvm/versions/node/v10.9.0/bin/npm" "run" "start"
18 verbose node v10.9.0
19 verbose npm  v6.2.0
20 error code ELIFECYCLE
21 error errno 1
22 error unsplash@1.0.1 start: `skpm-build --watch --run`
22 error Exit status 1
23 error Failed at the unsplash@1.0.1 start script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]
```

I have both **Sketch** and **Sketch Beta** in my `/Applications` folder