added microscopy server sources
added overview map base
added overview example
biolucida examples
css changes
overmap exposure
modified task to serve via 8000
patch to support custom tile sizes
enabled a passthrough projection, pixel units
improved microscopy sources
new z nav control, better scale line with pixel support
minor additions to get things to build
added leica example
updated readme
adding built examples
Merge pull request #1 from wholeslide/olmicroscope

bringing in some microscopy