Merge pull request #5 from adeven/development

Improve session tracking, use HTTPS protocol
Add sha1 hash, extract md5 from mac
add macSha1 parameter to session start
version 1.6
Merge pull request #6 from adeven/tapjoy

Enable tapjoy install tracking
Releasing NSString after loggin it to console
Releasing strPointer after creating NSString from CString
Remove whitespace, rename encodedString
Merge pull request #8 from adeven/fix_leaks

Fix two memory leaks, close #7
Add TODO to remove whitespace in appVersion
Rename eventId to eventToken, adeven/adjust#340