Merge pull request #36 from vonavi/master

Produce Textile and HTML outputs keeping newlines. RegexpHelper is modified, now it works better.
New pretty indentation of HTML output done, code essentially simplified. Currently, supports ordered and unordered lists, can broke Textile output.
Example outputs which satisfy me at the moment.
Update syntax highlight testcases
More carefully does the accumulation of output.
Corrects HTML output for definition lists and tables.
Updates examples with tables and lists.
Correction of HTML output for code blocks.
Examles of correct HTML outputs with code blocks.
Correction of HTML output for general blocks.
Examples of HTML output with correct general blocks.
Corrects the rest of HTML examples.
The rest of HTML examples corrected.
Corrects code syntax highlighting.
Code syntax highlight examples corrected.
Corrects Textile output.
Updates Textile examples.
Slight code refactoring was done, which improves accumulating block contents.
Suppresses to pop mode for a blank line.
Fixes the translation of inline example.