Add README

README.md

+## How to setup
+
+git clone git@gitlab.c3sl.ufpr.br:simcaq/monetdb-sql.git
+cd monetdb-sql
+make
+gem install monetdb-sql-1.0.gem
+git clone git@gitlab.c3sl.ufpr.br:simcaq/activerecord-monetdb-adapter.git
+cd activerecord-monetdb-adapter
+gem build activerecord-monetdb-adapter.gemspec
+gem install activerecord-monetdb-adapter-0.2.gem
+
+Then, you can run the tests provided in the tests directory.
+
+For the changes to be available to the Rails application, the ActiveRecord adapter needs
+to be rebuilt and reinstalled by issuing the gem build and install commands above.
+
+## MonetDB's internal methods (can be used to retrieve primary keys, foreign keys, columns, tables)
+
+http://dev.monetdb.org/hg/MonetDB/file/tip/clients/mapiclient/dump.c
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