Move DefaultSymbols in the symbol package.
Add default Japanese character settings

- changed the format of main configuration to set target language
- enhanced loader tests
Change sample config file followin the new format.
Make DefaultSymbols and JaDefaultSymbols to inherit DVSymbols class
Make DefaultSymbols and JaDefaultSymbols singleton class
Refactor SentenceIterator tests
Enhance test for SentenceIterator
Add assertions
Remove Vector
Add DocumentValidator tests

- added tests
- added exception handling to check method
Modify checkstyle configuration file

- added a exception of maximum line length
Fix items pointed out by Ohtani-san's comment
Rename setHeaderContent into appendHeaderContent

- changed not to set List parameter but to adding parameter elements
Fix Javadoc
Fix CheckStyle errors
Merge pull request #90 from takahi-i/enhance-tests-for-sentenceiterator

Enhance tests for sentenceiterator
Add packge-info.java for org.unigram.docvalidator.validator.sentence.lang.ja
Merge pull request #96 from takahi-i/add-package-info

Add packge-info.java for org.unigram.docvalidator.validator.sentence.lan...
Rename ParseUtil into SentenceExtractor

- made static methods into non static
Change the SentenceExtractor constructor to have a full stop character as the parameter

- given full stop character is stored as the member variable