Updates iOS app creation script;

iOS app icons are only added when the iOS app is builded.

Signed-off-by: Andreas Schacherbauer <andreas.schacherbauer@wikitude.com>
Merge branch 'Integration_4_0_2' of github-wikitude:Wikitude/wikitude-phonegap-samples into Integration_4_0_2
Merge pull request #24 from AndreasSchacherbauerWikitude/Integration_4_0_2

Integration 4 0 2