Load http-console commands on startup

[ptdorf]

This patch allows you to place http-console commands on a .http-console file and run them on startup. The three locations checked are, in order:

1. /etc/.http-console
2. $HOME/.http-console
3. $PWD/.http-console

Commands found in later files overwrite previous ones.

[unbalancedparentheses]

@ptdorf will first update the old code and resolve some issues. then i will check this and merge it.

[ptdorf]

@pyotrgalois This pull request was cleanly rebased.

[unbalancedparentheses]

@ptdorf cool, thanks. give me a few days that i have to check pull requests related with bug fixes and nodejs version. then i will check this :)