feature_request(enhancement): install missing software

[Kristinita]

1. Summary

It would be nice, if would be possible install software, that missed on current PC.

2. Argumentation

If:

1. User want to create build not on usual working PC
2. Or another user want to try install/build/test project with appveyor.yml

User machine can't have software, that pre-installed on AppVeyor. It would be nice, if would be possible simply add missing software.

3. Example of expected behavior

• localappveyor.yml:

install:
  choco:
  - nodejs
  - git
  - ruby

User run a command:

LocalAppVeyor build --job 0 --install

Before AppVeyor steps will run file:

START /B CMD /C choco install nodejs --yes
START /B CMD /C choco install git --yes
START /B CMD /C choco install ruby --yes

Chocolatey will install parallel nodejs, git, ruby — names of Chocolatey packages.

See choco install description for details.

Thanks.