Bump version to 1.6.2.

Author: jimmycuadra

lita-hipchat.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |spec|
   spec.name          = "lita-hipchat"
-  spec.version       = "1.6.1"
+  spec.version       = "1.6.2"
   spec.authors       = ["Jimmy Cuadra"]
   spec.email         = ["[email protected]"]
   spec.description   = %q{A HipChat adapter for Lita.}