add ability to disable the git autocommit.
Merge pull request #51 from danchoi/49-disable_git_autocommit

add ability to disable the git autocommit.
add global default mapping vars and initialize.
replace mappings with mapping-variables.
add mapping-description to README.
Merge pull request #52 from 0robustus1/39-soywiki_mapping_config

39 soywiki mapping config
add documentation for relative soyfile-eval.
refactor code to use class for html

Instead of using a module with class methods
we'll create a class which will be instantiated in order
to provide export to html capability.
add eval to relative links on soyfile.
Merge pull request #53 from 0robustus1/32-relative_soyfile_link_compilation

32 relative soyfile link compilation