THRIFT-2360 Json Generator

Patch: Craig Peterson, Peter Neumark & Roger Meier

Github Pull Request: This closes #247
diff --git a/compiler/cpp/CMakeLists.txt b/compiler/cpp/CMakeLists.txt
index e98adb7..548dec7 100644
--- a/compiler/cpp/CMakeLists.txt
+++ b/compiler/cpp/CMakeLists.txt
@@ -133,6 +133,7 @@
 THRIFT_ADD_COMPILER(xsd     "Enable compiler for XSD" ON)
 THRIFT_ADD_COMPILER(html    "Enable compiler for HTML Documentation" ON)
 THRIFT_ADD_COMPILER(js      "Enable compiler for JavaScript" ON)
+THRIFT_ADD_COMPILER(json    "Enable compiler for JSON" ON)
 THRIFT_ADD_COMPILER(javame  "Enable compiler for Java ME" ON)
 THRIFT_ADD_COMPILER(delphi  "Enable compiler for Delphi" ON)
 THRIFT_ADD_COMPILER(go      "Enable compiler for Go" ON)