[Process] added CHANGELOG

CHANGELOG-2.1.md

@@ -370,10 +370,6 @@ To get the diff between two versions, go to https://github.com/symfony/symfony/c
 
  * added Locale::getIcuVersion() and Locale::getIcuDataVersion()
 
-### Process
-
- * added ProcessBuilder
-
 ### Routing
 
  * the UrlMatcher does not throw a \LogicException any more when the required scheme is not the current one

src/Symfony/Component/Process/CHANGELOG.md

@@ -0,0 +1,11 @@
+CHANGELOG
+=========
+
+2.1.0
+-----
+
+ * added support for non-blocking processes (start(), wait(), isRunning(), stop())
+ * enhanced Windows compatibility
+ * added Process::getExitCodeText() that returns a string representation for
+   the exit code returned by the process
+ * added ProcessBuilder