updated build script

[simplesteph]

this fixes #360

DO NOT MERGE BEFORE #358 is available, otherwise you get:

Downloading: https://repo.maven.apache.org/maven2/io/soabase/exhibitor/exhibitor-standalone/1.7.0/exhibitor-standalone-1.7.0.pom
[WARNING] The POM for io.soabase.exhibitor:exhibitor-standalone:jar:1.7.0 is missing, no dependency information available
Downloading: https://repo.maven.apache.org/maven2/io/soabase/exhibitor/exhibitor-standalone/1.7.0/exhibitor-standalone-1.7.0.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.467 s
[INFO] Finished at: 2017-11-03T11:03:32+11:00
[INFO] Final Memory: 10M/205M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project exhibitor: Could not resolve dependencies for project exhibitor:exhibitor:jar:1.7.0: Could not find artifact io.soabase.exhibitor:exhibitor-standalone:jar:1.7.0 in central (https://repo.maven.apache.org/maven2) ->[Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException