Added .gitignore

.gitignore

@@ -0,0 +1,17 @@
+# git ls-files --others --exclude-from=.git/info/exclude
+# Lines that start with '#' are comments.
+# For a project mostly in C, the following would be a good set of
+# exclude patterns (uncomment them if you want to use them):
+# *.[oa]
+# *~
+*~
+*.diff
+*.patch
+
+artifacts/*
+!artifacts/README.md
+
+example_workdir/*
+!example_workdir/*.sh
+!example_workdir/*.sample
+