-u parameter added to the installation script documentation

[obastemur]

without -u parameter the installation script gives : TypeError: cannot concatenate 'str' and 'NoneType' objects

[msmith-techempower]

Technically, there are a few things changed with the installation script that need to be updated. I am actually in the middle of doing this right now >_<

You can get rid of this by setting the following environment variables in your .bash_profile:
TFB_SERVER_HOST, TFB_CLIENT_HOST, TFB_CLIENT_USER, TFB_CLIENT_IDENTITY_FILE, and TFB_DATABASE_HOST. These should all be strings with the IP address of each machine except for the identity file which needs to point to your ssh key.

EDIT: In the next build of the installation script, I will have it prompt the user for these values before continuing to try and install. The idea is that with the next build, the following will be all you need to begin setting up a test environment: toolset/run-tests --install all

[aschneider-techempower]

Installation script has been updated pretty dramatically (#900). Documentation has also been updated. No longer relevant.