Improve documentation

[eyalk11]

Hi,
The current documentation is lacking.

AddProject is not even mentioned.
I didn't understand why upon Telescope projects and enter it request me to find files.
What files are assigned to what project? is it open buffers? is the lsp workspace variable kept?

[andyl]

Bingo

[yrahul3910]

Yes, this took me quite a while to figure out. Contrary to what the README suggests, simply calling .setup() doesn't seem to suffice; you also need to call .init() afterwards:

require("project_nvim").setup()  -- you can add options here, I use defaults for now
require("project_nvim.project").init()

With this, Telescope picks up my projects for me in the search.