read version files

src/main/java/gov/usgs/earthquake/nshmp/www/WsVersion.java

+package gov.usgs.earthquake.nshmp.www;
+
+import com.google.common.io.Resources;
+
+import gov.usgs.earthquake.nshmp.internal.AppVersion;
+import gov.usgs.earthquake.nshmp.internal.LibVersion;
+
+public class WsVersion implements AppVersion {
+
+  public static VersionInfo[] appVersions() {
+    VersionInfo[] versions = {
+        new WsVersion().getVersionInfo(),
+        new LibVersion().getVersionInfo(),
+        new WsUtilsVersion().getVersionInfo(),
+    };
+    return versions;
+  }
+
+  public VersionInfo getVersionInfo() {
+    var resource = Resources.getResource("version/nshmp-ws-version.json");
+    return AppVersion.versionInfo(resource);
+  }
+}