added libraries associated with TPKLayer.js
added loading.gif
added tpk-layer.html sample
updated readme to include tpk libs
added tpk how-to-use link
updated sample licensing README
use arraybuffer for inMemTiles
remove reader functions
jshint files. Some still need some work but I didn't want to break anything.
Merge pull request #185 from driskull/jshint

jshint files. Some still need some work but I didn't want to break anyth...
No matter what jshint says, these are not really properties, but string-indexed elements. We access them later with a string index that comes in the geometry.type property. I believe the code is clearer this way.
Merge pull request #186 from jabadia/jabadia-revert-some-changes

string-indexed phantom symbols
app cache tiles sample fixed.
moved comment section. Added appcachemanager
moved comment section
fixed improper conditional
updated features appcache
Merge pull request #188 from andygup/fix_link

Fixed broken appcache samples
Merge branch 'master' into tpk_layer
rolled in all changes from staging