links to AF-Android-SDK-v2.3.1.9.jar in build files
added methods
s3eAppsFlyerSetCollectIMEI
s3eAppsFlyerSetCollectAndroidID
s3eAppsFlyerSetCollectMACAddress
google play services jar added
updated code to android sdk 2.3.1.9
added info about Google Advertiser Id to readme
small iOS bugfix
added s3eAppsFlyerDisableIAdTracking and s3eAppsFlyerDisableAppleAdSupportTracking