Updated gyp file for both librdkafka 0.9.5 and 0.11 (#207)
Updated gyp file for both librdkafka 0.9.5 and 0.11 (#207)

Works with both librdkafka 0.9.5 and current master where new sasl files
need to be compiled.
Conditional for win32, but tested on macOS not Windows
Blizzard/node-rdkafka,Blizzard/node-rdkafka,Blizzard/node-rdkafka,Blizzard/node-rdkafka