add italic and strong sentence tests
add several tests that copy from WikiParserTest
bug fix multiple sentence position in one line
Merge pull request #87 from johtani/support-italic-and-strong-for-markdown

Support italic and strong sentence for markdown parser
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
Add getSentenceEndPosition to SentenceExtractor
Make the constructor of SentenceExtractor to have list of end of sentence characters

- removed the period parameter from SentenceExtractor.getSentencePosition
- make PlainTextParser not use StringUtils methods

NOTE: this version only uses the first element of end of sentence character to detect
end of the sentence.
Add constructEndSentencePattern method in SentenceExtractor