Node Wrangler not showing up in version 2.77a - need advice!

I am taking a course in Blender Cookie on the Fundamentals of Shading. The course is using version 2.73. In it they are working with the addon Node Wrangler. I have activated the addon in 2.77a but it is not showing up in my node editor window. I have googled the problem and have seen that others are experiencing the same problem but some have found solutions (in version 2.77a). I have tried the solutions I read but still no Node Wrangler shows up under the Grease pencil category.

Can anyone offer some suggestions? Thanks

Now it has its tab in the toolbar.

I see it!! Thanks Bartek!