Visual Composer Showing Custom Short code as it is in Default Post Type

i am new with visual composer page builder. i have create my custom Adds-one of testimonials. and Enable Visual Composer for pages, posts and custom post types. but when i create a default post and add my custom Adds-one, and check the view. its shows the short code as it is. look at the following: below is the short code that i want to display in the default post:

[vc_row][vc_column][travel_cp_testimonials background_color="#f9f9f9" display_style="1" title="testimonuial"][/vc_column][/vc_row] 

kindly guide me how can i add my custom Add-ones to default posts and also custom post types same as we use for pages 

thanks

via Chebli Mohamed