Fix typo and update some description.
Add some comments and update debug message.
Fix typo.
Add parameter verbose to show more debug message.
Remove header line count parameter.

Header line always exists and locates at first line.
Add county/city and town.
Gen county city township from post office data.
Collect and compare suspicious address.
Fix addr and collect specific data columns.

Fix some known incorrect addresses. Tune for 1010611 data set.
Fix address for 1020914 data set.
Add 1020914 data set.

1. data under 'raw' directory is untouched data.
2. police-stations-yyymmdd.csv is data converted from big5 to utf8 via iconv
   command line tool.
   $ iconv -f big5 -t utf8 raw/xxx.csv -o police-stations-yyymmdd.csv
Fix latlng convertion bug.

Dont' convert when x and/or y is not available.