add MacOS files to gitignore
use int32 for Expiration and Generation in WritePolicy
support bool, float32 and float64 in msgpack serialization
better code comments in line with godoc requirements
fixed initial tend bug
changed taskId to int64
taskId is set to time.Now().UnixNano() in the client by default
added tests for proxying
redirect tools output to Stdout
Updated changelog
Updated tests
Updated changelog
Updated tests
Merge branch 'change_expiration_to_int32' of https://github.com/citrusleaf/aerospike-client-go into change_expiration_to_int32
Updated README file