diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..97efaa5
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.DS_Store
+*.o
diff --git a/README b/README
index 9dbe00b..47430f6 100644
--- a/README
+++ b/README
@@ -1,5 +1,7 @@
 Pretty6502 v0.1 by Oscar Toledo G. http://nanochess.org/
 
+Executables provided for Mac OS X and Windows.
+
 Usage:
     pretty6502 [args] input.asm output.asm