Update README.md

Update default example path for Tox libs
properly set default user settings
Allow toxic to compile without av
Little fix(tm)
fix chat scroll bug
fix possible buffer overflow
fix another possible buffer overflow

..
Bumped to 0.4.0
no trailing space for command tab-complete
add setting to allow specified download path & some fixes
update example conf file
fix a few file transfer bugs
better fix for trailing spaces issue
improve function
refactor calling of toxic_string functions
proper commandline args
update dhtnodes
--help message
terminate audio before core on exit
more intuitive option logic