upgrade dependencies

• curl 7.54.1
• glog 0.3.5
• librdkafka 0.9.5
• folly 2017.06.26.01, resolve #3
• cmake 3.8.2

For internal testing

v0.3.0

Merge branch 'release/0.3.0'

For internal beta

v0.2.0

Merge branch 'release/v0.2.0'

For internal testing

v0.1.0

remove build dir