add diff-pdf tool and python cmdline tool
use absolute path for diff-pdf binary
rename for better distinction
add documentation
fix small typos
use more reliable absolute path
example fonts and statslab fixes for statistics text
switch to comparepdf to guarantee OS X compability, remove diff-pdf source
fix small typo
restyled chapter outlines/chapter objectives based on the correct md:abstract markup, fixed end-of-book references text indent/font
Squashed end of chapter solutions, hid glosary title::befores made end of book solutions display inline
Merge pull request #123 from Connexions/diff-pdf-tool

Diff pdf tool
add exit code and change OK color to green
print OK once whole directory is compared
Updated end-of-book-solutions styling, yet the bug (text bleeding off the page) persists.
fix of exmple related font issues in solutions
change method names so that no boolean return value is assumed and add comments
Merge pull request #124 from Connexions/diff-pdf-tool

Diff pdf tool (exit status, colors)
import image optionally from PIL package
import image optionally from PIL package