Update shaarli_version.txt

La version actuelle de shaarli est la 0.042.
Merge pull request #37 from qwertygc/patch-2

Update shaarli_version.txt
index.html: add warning message about hostname/cookie storage problems
 * Fixes https://github.com/sebsauvage/Shaarli/issues/196
 * Fixes https://github.com/sebsauvage/Shaarli/issues/97
Update README:
 * Add screenshots
 * Use Mediacrush as a CDN for images to reduce load on sebsauvage.net
 * Improve page layout/sections
 * Reorder list of features
 * Add links to wiki and bug tracker
 * Add proper download links for stable/dev channels
 * Improve copyright/license notice
Add Archive.org integration
 * adds an "archive" link next to permalinks, linking to the last version of the page on archive.org
Merge pull request #43 from nodiscc/archiveorg-integration

Add Archive.org integration
Merge pull request #39 from nodiscc/master

add warning about hostname/cookie storage problems during install
Merge pull request #42 from nodiscc/new-readme

Update README
make archive.org integration optional (ARCHIVE_ORG option, defaults to false)
Merge pull request #51 from nodiscc/optional-archiveorg

make archive.org integration optional (ARCHIVE_ORG option, defaults to false)