Move dev notes into README

Author: palfrey

README.md

@@ -24,4 +24,11 @@ Options
 Database support
 ----------------
 * Anything you've got an [ODBC](https://en.wikipedia.org/wiki/Open_Database_Connectivity) driver for (which should be most SQL databases)
-* Postgres
+* Postgres
+
+Development
+-----------
+To test the Postgres/ODBC support do the following (on OS X):
+1. `docker run -P postgres -d` to get a PostgreSQL server running
+2. `brew install psqlodbc sqliteodbc`
+3. ``POSTGRES_SERVER=localhost POSTGRES_PORT=32768 POSTGRES_USERNAME=postgres POSTGRES_PASSWORD= RUST_BACKTRACE=1 POSTGRES_DRIVER=`brew --prefix psqlodbc`/lib/psqlodbca.so SQLITE_DRIVER=`brew --prefix sqliteodbc`/lib/libsqlite3odbc-0.9996.dylib cargo test -- --nocapture``