Fix for preposition vocalization: "v tři" -> "ve tři"

Will only use "v tř..." for some town names (where it is usual
according to the Czech National Corpus).
Merge pull request #15 from UFAL-DSG/nlg_vocalization_fix

A tiny fix for preposition vocalization: "v tři" -> "ve tři"
Normalizing 'Můstek - A' = 'Můstek' etc.

Making directions.py more unicode.
Subway transfers said properly, arrival time not mentioned
Merge branch 'master' into navigation_fixes
Support for current time, preparation for weather.
Tiny fixes, TODOs
Just PEP8
A fix to issue #14.
Allowing asking for weather
Merge pull request #16 from UFAL-DSG/navigation_fixes

Small fixes in navigation
Interpreting departure, arrival and weather time

Now it's possible to search for connection with a given arrival time.
Merge pull request #17 from UFAL-DSG/fix_preprocessing

A fix to issue #14.
First basic attempt at using the OpenWeatherMap API
Merge branch 'master' into time_weather
Update README.rst
Update README.rst
Merge remote-tracking branch 'origin/ptics_live'
Basic weather working.

TODO: Add declension to degrees.
Updated the policy to accept belief state from the tracker.