Merge pull request #4 from iirina:add-gitignore

PiperOrigin-RevId: 256113034
Change-Id: I68f1944632d85f82f53f9afa47a0a9c2ea42097d

Author: copybara-github

.gitignore

@@ -0,0 +1,19 @@
+# Ignore backup files.
+*~
+# Ignore Vim swap files.
+.*.swp
+# Ignore files generated by IDEs.
+/.classpath
+/.factorypath
+/.idea/
+/.ijwb/
+/.project
+/.settings
+# Ignore all bazel-* symlinks. There is no full list since this can change
+# based on the name of the directory bazel is cloned into.
+/bazel-*
+# Ignore outputs generated during Bazel bootstrapping.
+/output/
+# Ignore jekyll build output.
+/production
+/.sass-cache