pidgin/pidgin

Refresh the README as a few things have moved and some of the wording was weird.

2021-03-19, Gary Kramlich
b09ca0df70cb
Refresh the README as a few things have moved and some of the wording was weird.

Testing Done:
Read it a few times.

Reviewed at https://reviews.imfreedom.org/r/568/
---
name: libpurple-common
buildsystem: simple
build-commands:
- true
modules:
- external/avahi.yml
- external/cyrus-sasl2.yml
- external/farstream.yml
- external/libgadu.yml
- external/libidn.yml
- external/mercurial.yml
- gplugin.yml