Yes, it's real. Sort of.
How to Speak Wookiee: A Manual for Intergalactic Communication (http://smile.amazon.com/gp/product/1452102554/ref=pe_848060_130998330_em_1p_0_ti)
It's a children's speaking book. By, uh, Wu Kee Smith.
Yes, there is an R2D2 edition (http://smile.amazon.com/How-Speak-Droid-R2-D2-Communication/dp/1452113939/ref=pd_bxgy_b_text_y).
Also what I will probably get my nieces next Christmas, since I gave them plus (and speaking) Chewbacca and R2D2 this past season.
Also, the Groghead's forum doesn't recognize the possessive of children.
Also, I may have taken too much allergy medicine last night. This seems relevant.