Documentation for the most common usecase

[tilpner]

There's... not very much information on how to get this running.

The user is greeted with a friendly

$ target/debug/distirc
thread '<main>' panicked at 'Failed to open config file: Error { repr: Os { code: 2, message: "No such file or directory" } }', ../src/libcore/result.rs:785
note: Run with `RUST_BACKTRACE=1` for a backtrace.

but no information on how to create and where to put such a file.

[Forkk]

Some basic documentation has been added here, but not enough to really consider this finished yet. I'll continue adding docs.