add ant build.xml to allow us to generate a new phonegap jar and js from source for distr purposes
add ant build.xml to allow us to generate a new phonegap jar and js from source for distr purposes

kchitalia/SalesforceMobileSDK-Android,seethaa/force_analytics_example,kchitalia/SalesforceMobileSDK-Android,solomonronald/SalesforceMobileSDK-Android,huminzhi/SalesforceMobileSDK-Android,huminzhi/SalesforceMobileSDK-Android,solomonronald/SalesforceMobileSDK-Android,huminzhi/SalesforceMobileSDK-Android,kchitalia/SalesforceMobileSDK-Android,seethaa/force_analytics_example,solomonronald/SalesforceMobileSDK-Android,seethaa/force_analytics_example