Feature Set .gitattributes to ignore docs and tests folder, and some source asset files which are not needed

.gitattributes

@@ -1,6 +1,18 @@
-docs/                 export-ignore
-javascript/src/       export-ignore
-*.dist                export-ignore
+/tests export-ignore
+/.tx export-ignore
+/.gitattributes export-ignore
+/.gitignore export-ignore
+/.travis.yml export-ignore
+/*.dist export-ignore
+/behat.yml export-ignore
+
+/client/src export-ignore
+/webpack.config.js export-ignore
+/.eslintignore export-ignore
+/.eslintrc.js
+/.sass-lint.yml
+/yarn.lock export-ignore
 
 # Hide diffs
-javascript/dist/ -diff
+/client/dist/js -diff
+/client/dist/styles -diff