Merge pull request #2 from yvondamours/master

Fixed handling of null values
Fixed a few compiler warnings
Added handling of null values in variable bindings

with tests
Improved batch tests
Fixed timestamp serialization
Made sure it's possible to get rid of a cqerl client even if async responses haven't been received yet
Update README.md
Update README.md
Change source of snappy repo to a newer one
Fixed code typo
Merge branch 'master' of github.com:matehat/cqerl
Fixed nodeinfo handling
Fixed automatic client selection
Fixed preparation of global configs
Removed all use of 'query', as it is a keyword prior to R16
Fixed a few issues with backward compatibility with R15
Fixed bug when dequeuing requests
Fixed issue with TCP frame fragmentation
Moved test_SUITE to integrity_SUITE, and added load_SUITE for load testing
Fixed an issue with client process selection