README: I've been told I should add myself to the Credits section...
let sqlalchemy handle schema creation; also pgsql
Merge pull request #1 from chooper/alchemy-schema

let sqlalchemy handle schema creation; also pgsql
remove reference to nonexistent schema.sql in setup.
Handle cases, when code is not being run from virtualenv.
Merge pull request #12 from deathowl/master

migrate data access to SQLAlchemy. Add Mysql supported schema also.
Separate requirements.txt files for different DBs

Setup fails in the absence of header files when installing a
db client.
README: Added @chooper to credits
README: update example config to use ALCHEMY_URL
Fix regression: permalink until changed each second when until=-1
README: add link to php client by @Gerifield
fix merge conflict