Create references.md

A list of various references used during the development of the project (code not yet imported from private SVN repo).

references.md

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+# References used while developing this project
+
+## Redmine
+
+- http://www.redmine.org/projects/redmine/wiki/RedmineReceivingEmails
+
+## Python
+
+### Basics
+
+- http://stackoverflow.com/questions/287871/print-in-terminal-with-colors-using-python
+- http://www.answermysearches.com/how-to-get-a-month-name-in-python/421/
+- http://docs.python.org/library/datetime.html
+- http://stackoverflow.com/questions/4906977/python-environment-variables
+- http://stackoverflow.com/questions/15836713/allowing-a-specific-value-for-an-argparse-argument
+
+### MySQL/MariaDB
+
+- https://mariadb.com/resources/blog/how-connect-python-programs-mariadb
+- https://dev.mysql.com/doc/connector-python/en/connector-python-api-errors-error.html
+- https://dev.mysql.com/doc/connector-python/en/connector-python-api-mysqlconnection-raise-on-warnings.html
+
+- https://dev.mysql.com/downloads/repo/apt/
+- https://dev.mysql.com/doc/mysql-apt-repo-quick-guide/en/
+- https://dev.mysql.com/downloads/connector/python/2.1.html
+
+### SQLite
+
+- The Python Standard Library by Example, 7.5.1, 7.5.9
+- https://docs.python.org/2/library/sqlite3.html
+- http://stackoverflow.com/questions/21360271/pythons-sqlite3-module-exceptions-where-is-the-documentation
+
+## Sending mail
+
+- http://docs.python.org/library/smtplib.html
+- http://effbot.org/pyfaq/how-do-i-send-mail-from-a-python-script.htm