add SDK usage options
add SDK usage options

add instructions for maven support issue
add link for wiki page related to Android Studio and Maven usage
AzureAD/azure-activedirectory-library-for-android,iambmelt/azure-activedirectory-library-for-android,thewulf7/adal-extended,thewulf7/adal-extended,w9jds/azure-activedirectory-library-for-android,iambmelt/azure-activedirectory-library-for-android,w9jds/azure-activedirectory-library-for-android,AzureAD/azure-activedirectory-library-for-android