update in-app payments client library
add minimum chrome version
Merge pull request #104 from mkruisselbrink/iap

update in-app payments client library
Link to chrome store
Added Twitter client in a webview
Fixed cookie saving.
Simplify the singleton sample window creation.
typo: wheight -> height
Merge pull request #108 from MatrixFrog/patch-1

typo: wheight -> height
Window state sample: Adding ID & singleton support.
Window State: Minor layout and styling changes.
Update the filesystem sample to use retainEntry and restoreEntry.
Update minimum_chrome_version.
Don't check that chrome.fileSystem.{retain,restore}Entry exist. The version check should take care of it.
Merge pull request #109 from sammc/master

Use retainEntry to keep opened files between runs of the filesystem sample app
Switched Identity Sample App to stable identity API
Switched Appsquare Sample App to stable identity API and renamed chrome.extension.lastError to chrome.runtime.lastError
Forgot one mention of experimental identity API in Appsquare
Updated Instagram-auth to stable identity API and fixed key issue
Switched Google Drive Uploader Sample App to stable identity API