Add Chalk to dependencies list

[Arual90]

Hello,
I have installed the version 3.2.0 of @stoplight/prism-cli

Executing the command prism mock ./swagger.yml -p 8086 i receive the following error:

/Users/me/Documents/app/node_modules/@stoplight/prism-cli/dist/const/options.js:5
    CLI: { index: 0, color: chalk_1.default.bgWhiteBright },
                                            ^

TypeError: Cannot read property 'bgWhiteBright' of undefined
    at Object.<anonymous> (/Users/me/Documents/app/node_modules/@stoplight/prism-cli/dist/const/options.js:5:45)

My app uses chalk version 3.0.0 and i noticed that prism-cli have no chalk dependency defined in the package.json even if it uses it, this way it resolves using the globally installed version 3 which is not the version it needs.

I think adding the line "chalk": "2.4.2" to prism-cli package.json would resolve this little dependency problem

[XVincentX]

Minchia — questa non me la aspettavo. Finalmente qualche italiano che usa sta roba @Arual90

Yeah, I think for some reason the dependency has been removed by mistake. I'll open a PR to close this.

[XVincentX]

@Arual90 Che versione di node e npm stai usando? Per quanto sia effettivamente un errore, a me su node 12 (yarn e npm) risolvono la dipendenza correttamente.

Intanto, puoi utilizzare il binario precompilato che offriamo nel tab "releases"

[Arual90]

Sto usando Node 10, probabilmente gestisce la cosa diversamente
Grazie per il fix ;)