Support for creating (bundle) project files in the current working directory

[D-T-666]

Implemented (and documented) support for creating project files in the current working directory.

To do so, you have to pass "." as a project name to the p5 g -b command like this: p5 g -b .. This takes the name of the current working directory and puts it in the title of the generated html page, all while putting the generated files in the current directory.