Add the two next trains

[fabaff]

Description:
Add the next two trains to the sensors.

As requested: ☝️ June 29, 2016 5:43 PM

Pull request in home-assistant.io with documentation (if applicable): home-assistant/home-assistant.io#595

Example entry for configuration.yaml (if applicable):

sensor:
  - platform: deutsche_bahn
    from: Munich
    to: Ulm

Checklist:

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in home-assistant.io

If code communicates with devices:

• Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• [-] New dependencies have been added to the REQUIREMENTS variable (example).
• [-] New dependencies are only imported inside functions that use them (example).
• [-] New dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• [-] New files were added to .coveragerc.

If the code does not interact with devices:

• Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• Tests have been added to verify that the new code works.

CC @deisi

[balloob]

Looks good! 🐬