Merge branch 'feature/persist': Persisting events in MongoDB

commit 9577abbbf93533d8f15f2025747ef74b5e28a4d3
Author: Hugo Campos <hugofcampos@gmail.com>
Date:   Thu Apr 3 00:25:37 2014 -0300

    Adding start data and status field to list

commit 5dfa1e284b1dcb9376b9fec0e9e5a4aa1c9b0795
Author: Hugo Campos <hugofcampos@gmail.com>
Date:   Wed Apr 2 23:34:42 2014 -0300

    Retrieve persisted data

commit 13b35aa5915f5587be6b1e53d73622d5bc2ac0e1
Author: Hugo Campos <hugofcampos@gmail.com>
Date:   Wed Apr 2 23:13:00 2014 -0300

    Updating events

commit ea7fa54dc27f9aee06234c0c5ffc3e5166e8067a
Author: Hugo Campos <hugofcampos@gmail.com>
Date:   Wed Apr 2 22:39:48 2014 -0300

    Persisting events

commit b77fa01547379c5d025f0aa8fb72f69214447e38
Author: Hugo Campos <hugofcampos@gmail.com>
Date:   Wed Apr 2 22:27:01 2014 -0300

    Adding mongodb to app