SQL: accept schema kwarg
test for sql schema creation
sql: test schema/db handling against postgres
sql: test db/schema creation through SQL
sql: test that SQL(..., 'db.tablename') works
sql: test resource works with database name
sql: add db kwarg to SQL docstring
sql: activate travis.ci postgres testing code
doc: add example of db.tablename SQL uri to uri.rst
add psycopg2 to travis.yml
pip install psycopg2 in travis.yml
sql: rename dbname to schema_name
Merge pull request #803 from mrocklin/sql-schema

SQL accepts database/schema name
Add length expression
Add NRows expression
Implement NRows for different backends
Clean up star imports
Move to reductions
Rename NRows -> nrows
Use None instead of {}