Add mapperx to .gitignore

Change-Id: I67b3b1194aaa5eb174c522220d637bc231f883f1
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/.gitignore b/.gitignore
index 62fefe1..e4b4a64 100644
--- a/.gitignore
+++ b/.gitignore
@@ -109,3 +109,4 @@
 mapper
 !mapper/
 setup.py
+mapperx