Here are the instructions from the developer setup guide I put together when I configured the environment:
a. Select “Help | Install New Software…”
b. Uncheck “Group items by category”
c. Select the "JBoss Tools" site (previously configured as the above URL)
d. Select the components
e. Press “Next >”
f. Press “Next >” (if available).
g. Select “I accept the terms of the license agreements” (if available).
h. Press “Finish”
It may have been installed as a dependency. Here's the complete list of addiitonal software needed for our environment: