working gulpfile
added markdown to html and pdf tasks
added README and documentation in gulpfile.js
minor addition o the README
add var as suggested by @sindresorhus
refactor gulpfile
fixed css path for concat:pdf gulptask
added epub task in the gulpfile
update to through2
merge with master
merge with master and update content
Merge pull request #31 from rowoot/feautre-gulp-pandoc

Build system 0.0.1