Changed Mixpanel API to Slash7 API
Move Mixpanel.{h,m} to Slash7.{h,m}
Compilable
modified slash7WillFlush
Moved Mixpanel dir to Slash7
Moved HelloMixpanel to HelloSlash7
rename HelloMixpanelTests to HelloSlash7Tests
Remove logo
upgrade project.pbxproj
Rename prefix to S7
Rename log macros
Updated file path
send _empty when event is nil
Rename property name
Rename event name key
Changed event params key
Updated to our event format
Changed endpoint
Renamed distinctId to appUserId
Added sendDeviceInfo flag