Copy the code from the example/build of 2.6.2 that uses the 2.6.0 compatible version of the guides READMEs. Need to download the 2.8.0; use curl instead of pandoc.
Example docs have been modified. Need to do this for other manuals.
Waiting for all the external repos to be updated to use "cdap-<version>-compatible" consistently (in this case, "2.8") across all repos.