Allow to use scheme with spaces and special characters

[Maxim-Filimonov]

If scheme name has - build fails with the following error:

xcodebuild: error: Unknown build action '-'.

This should prevent this error from happening. Xcode allows to use those characters in scheme name. It's only bash issue.

I tried using '' in config:

- rn/ios_build:
          scheme: 'Schema Name - BDD'

it didn't help.