THRIFT-3510 Add HttpTaskAsyncHandler implementation
Client: C#
Author: Adam Connelly <adam.rpconnelly@gmail.com>

This closes #762
diff --git a/.gitignore b/.gitignore
index 957dc9f..922ac4d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -143,6 +143,7 @@
 /lib/c_glib/thrift_c_glib.pc
 /lib/csharp/**/bin/
 /lib/csharp/**/obj/
+/lib/csharp/src/packages
 /lib/d/libthriftd.a
 /lib/d/test/serialization_benchmark
 /lib/d/test/transport_test