Documentation Structure

Change-Id: I4a2b4392267af08635aa8ebeae4631d4ffb583af
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4b89fda
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+npm-debug.log
+_book/
+node_modules/
\ No newline at end of file