change default to use public PeerJS server

...so that when people run things, it works the first time without having to
change the config.
make things easier to install

mv config to root directory, and improve README
add simplest possible express server to host files

...this is much better for development, so you can run many different servers
that have different HTML 5 local storages for testing purposes.
Merge pull request #101 from ryanxcharles/feature/improve-default-config

Improve default config + Add local express server + Update README
better sync for peers
fix typos ... add space for formatting clarity
Merge pull request #102 from matiu/feature/ux8

better sync for peers
Merge pull request #103 from ryanxcharles/bug/typos

fix typos ... add space for formatting clarity
merge