Added method to pass cookies on conenct
Merge commit 'e0e4f621048f6f4b16c67b3f9ca525152d23e4bd' into develop
adjust cookie implementation
add cookie example
distinguish between handshake failed and unauthorized handshake
add examples for different event data types. ref #158
add extra contributors file
bump version to v0.5.1 + clean up
v0.5.1

  Added method to pass cookies on conenct
  adjust cookie implementation
  add cookie example
  distinguish between handshake failed and unauthorized handshake
  add extra contributors file
  add examples for different event data types. ref #158
  clean up