Follow this tutorial to create a web based method of sending whatsapp messages to your contact list.
MUST HAVE IPHONE to test
1) Create a portal within symfony 2 PHP framework that allows me to upload a .csv file with name, phone number
2) Implement WhatsAPI to enable me to send messages and pictures to those contacts.
Here is git for WhatsAPI: https://github.com/venomous0x/WhatsAPI
Here is git for getting the password for whatsapp: https://github.com/shirioko/MissVenom
Note you can not build this without an iPhone.. MissVenom does not work on Android anymore.