The plugin relies on the btc-ascii-table java library.
After setting up the maven project make sure to install the dependencies
cd <project-dir>
mkdir lib && cd lib
curl -O https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/java-ascii-table/btc-ascii-table-1.0.jar
cd ..
mvn install:install-file -Dfile=lib/btc-ascii-table-1.0.jar -DgroupId=com.bethecoder -DartifactId=ascii-table -Dversion=1.0 -Dpackaging=jar