From 1.3 to 1.5

ceae1d8 Update README.md
1d68483 Typo
0320ec5 Update sample image.
f7b677a Update README.md
6abde91 Improve metadata.
9ac84ca Add a button to download metadata as a text file.
f50f829 #11: Javascript improvements.
48540cd #20: Provide @updateURL metadata
20032c5 Update README.md
2b4f067 Update README.md
7d608af Remove very old script.
da46ec8 Merge pull request #8 from maxlath/master
c73ee36 Merge pull request #9 from uahim/patch-1
eef2d8d Update arte-downloader.user.js
4aec625 Merge pull request #7 from aug-riedinger/master
8d0da6e adding install instructions for Firefox
410dbe4 asking GreaseMonkey permission to use GM_xmlhttpRequest [Firefox](see GM doc http://wiki.greasespot.net/@grant)
6b3f4dd updated readme.md again
d7f726d updated readme.md
00806e1 updated readme version number
c363882 Added direct download on buttons
7f6a0ff fixed errors + changed Xpaths to DOM selectors + display under video
0861c7b Fix the JSON URL selection.
f233fed Fix the styling of the buttons.
301b857 Current Version is 1.3
c751936 Update README.md