working Git version infoset in epubReadingSystem, with caveat: Eclipse Builders-based system doesn't allow temporary change of "asset" resource, so need clean after building app, otherwise epubReadingSystem.js is git-committed with current values instead of empty template.
additional resource refresh during Builder
added missing file, restored JS empty template, added git-ignore entries
ah, JS empty template file was inadvertantly modified by the build script, now using a hard-coded backup
added Ant build.xml (use with "debug install" to build for device/simulator)
Merge pull request #35 from readium/feature/epubReadingSystem

navigator.epubReadingSystem version info / git commit hash, shell script added to Eclipse and Ant builds