Implement test cmd in package json

.gitignore

@@ -1,6 +1,6 @@
 #compiled files
 /build
-
+.ima_version.json
 # dependencies
 /node_modules
 

.ima_version.json

@@ -1 +0,0 @@
-{ "version":"2019_03_15 17_18" }

package.json

@@ -7,7 +7,8 @@
     "start": "http-server ./build",
     "build": "webpack --mode=development",
     "watch": "webpack --watch --mode=development",
-    "compile": "webpack --mode=production && tar -zcvf ivprog.tar.gz build/"
+    "compile": "webpack --mode=production && tar -zcvf ivprog.tar.gz build/",
+    "test": "./node_modules/karma/bin/karma start"
   },
   "repository": {
     "type": "git",