Added travis build script.

package-lock.json

@@ -1288,6 +1288,23 @@
         "debug": "2.6.9",
         "mkdirp": "0.5.0",
         "yauzl": "2.4.1"
+      },
+      "dependencies": {
+        "minimist": {
+          "version": "0.0.8",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
+          "dev": true
+        },
+        "mkdirp": {
+          "version": "0.5.0",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.0.tgz",
+          "integrity": "sha1-HXMHam35hs2TROFecfzAWkyavxI=",
+          "dev": true,
+          "requires": {
+            "minimist": "0.0.8"
+          }
+        }
       }
     },
     "extsprintf": {
@@ -1969,10 +1986,9 @@
       "dev": true
     },
     "mkdirp": {
-      "version": "0.5.0",
-      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.0.tgz",
-      "integrity": "sha1-HXMHam35hs2TROFecfzAWkyavxI=",
-      "dev": true,
+      "version": "0.5.1",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+      "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
       "requires": {
         "minimist": "0.0.8"
       },
@@ -1980,8 +1996,7 @@
         "minimist": {
           "version": "0.0.8",
           "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
-          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
-          "dev": true
+          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
         }
       }
     },