Allow image/jpg as well as image/jpeg

Passing a jpg data URI with the wrong data header currently causes an
error from getJpegSize.  This commit replaces 'jpg' with 'jpeg' in the
data URI and removes that error
enable jsPDF to export a html5 blob
extends feautes of from_html and cell plugins
from_html now supports pagination, img and table tags
Fix up example code
Fix small typo
Merge pull request #153 from chris-rock/blob

Enable jsPDF to return a HTML5 Blob
Fix another typo in basic demo page
Merge pull request #137 from ghost/master

Allow image/jpg as well as image/jpeg
Merge branch 'master' of https://github.com/MrRio/jsPDF
Tidy up rogue package.json
Tidy up code, update copyright notice
Changed Producer version to match new trunk version
wak wscript.py fix
allow a object to be passed as first argument to extend internal options, such as line-width/height
addImage: imageData.substr() will throw a Typerrror if an object is passed
addImage: imageData.clientWidth/Height might not be available
Merge pull request #171 from diegocr/master

Various fixes and improvements.
Added uglify.sh script to create jspdf.min.js using UglifyJS, fixes #161
Replaced async.js by a submodule pointing to its origin repo