how to get charts demo to run in eclipse

https://github.com/vaadin/charts

Keep getting errors when trying to follow these instructions:
https://github.com/vaadin/charts/blob/7a55e8dab5b9941a05603c2624a576866e86045d/DevInstructions.md

4 errors after import in: 'vaadin-charts-directorypackage' 

Failed to run task (com.github.eirslett:frontend-maven-plugin:0.0.23:bower:bower install:generate-resources)
Failed to run task (com.github.eirslett:frontend-maven-plugin:0.0.23:gulp:gulp deploy:deploy)
Failed to run task (com.github.eirslett:frontend-maven-plugin:0.0.23:gulp:gulp stage:generate-resources)
Failed to run task (com.github.eirslett:frontend-maven-plugin:0.0.23:npm:npm install:generate-resources)
Caused by: com.github.eirslett.maven.plugins.frontend.lib.TaskRunnerException: 'npm install --color=false' failed. (error code 34

- tried adding some conifg from com.github.eirslett:frontend-maven-plugin:0.0.23:bower:bower install:generate-resources, which resulted in a new error:
Failure to find com.github.eirslett:frontend-maven-plugin:jar:3.0-SNAPSHOT in https://oss.sonatype.org/content/repositories/vaadin-snapshots/ was cached in the local repository, resolution will not be reattempted until the update interval of vaadin-snapshots has elapsed or updates are forced    pom.xml    /vaadin-charts-directorypackage    line 1    Maven pom Loading Problem

After Add Facets:

Cannot change version of project facet Dynamic Web Module to 2.4. vaadin-charts-demo line 1 Maven Java EE Configuration Problem
Java compiler level does not match the version of the installed Java project facet. vaadin-charts-demo Unknown Faceted Project Problem (Java Version Mismatch) One or more constraints have not been satisfied. vaadin-charts-demo line 1 Maven Java EE Configuration Problem

How do I resolve these issues? Where do I need to be looking in the files for the errors?

Original post:
http://stackoverflow.com/questions/31303743/how-to-run-vaadin-charts-demo-in-eclipse