This allows a page to have multiple placeholders, since we're no longer
tied to unique IDs.

To improve organization with the increasing number of examples, every
example page is now the index of its own subdirectory, which contains
all the files specific to that example.

git-svn-id: https://flot.googlecode.com/svn/trunk@319 1e0a6537-2640-0410-bfb7-f154510ff394

trick to avoid null axes and use axis.show guard


git-svn-id: https://flot.googlecode.com/svn/trunk@309 1e0a6537-2640-0410-bfb7-f154510ff394

Skip loading excanvas in IE 9 in examples (thanks to Ryley Breiddal), adapt NEWS and README to mention this

git-svn-id: https://flot.googlecode.com/svn/trunk@293 1e0a6537-2640-0410-bfb7-f154510ff394

git-svn-id: https://flot.googlecode.com/svn/trunk@261 1e0a6537-2640-0410-bfb7-f154510ff394