UNOMI-409 add .gitignore to unomi-web-tracker (#228)

* UNOMI-409 add .gitignore to unomi-web-tracker

* UNOMI-409 move snippet.js into src update npm scripts
diff --git a/extensions/web-tracker/javascript/.gitignore b/extensions/web-tracker/javascript/.gitignore
new file mode 100644
index 0000000..1521c8b
--- /dev/null
+++ b/extensions/web-tracker/javascript/.gitignore
@@ -0,0 +1 @@
+dist
diff --git a/extensions/web-tracker/javascript/package.json b/extensions/web-tracker/javascript/package.json
index f343358..a827d85 100644
--- a/extensions/web-tracker/javascript/package.json
+++ b/extensions/web-tracker/javascript/package.json
@@ -11,12 +11,13 @@
   "author": "Apache Software Foundation",
   "license": "Apache-2.0",
   "scripts": {
-    "build": "yarn browserify && yarn replace && yarn minify && yarn snippet:minify",
+    "build": "yarn browserify && yarn snippet:browserify && yarn replace && yarn minify && yarn snippet:minify",
     "browserify": "browserify src/index.js -p [ browserify-header --file src/license.js ] -s unomiTracker -o dist/unomi-tracker.js",
+    "snippet:browserify": "browserify src/snippet.js -o dist/snippet.js",
     "replace": "replace-in-file 'analytics.require = require' '//analytics.require = require' dist/unomi-tracker.js",
     "minify": "cd dist && uglifyjs -c -m --comments '/@license/' -o unomi-tracker.min.js --source-map url=unomi-tracker.min.js.map -- unomi-tracker.js",
-    "snippet:minify": "uglifyjs -c -m -o snippet.min.js --source-map url=snipper.min.js.map -- snippet.js",
-    "clean": "rimraf *.log dist/unomi-tracker.js dist/unomi-tracker.min.js",
+    "snippet:minify": "cd dist && uglifyjs -c -m -o snippet.min.js --source-map url=snipper.min.js.map -- snippet.js",
+    "clean": "rimraf *.log dist/*",
     "clean:all": "yarn clean && rimraf node_modules"
   },
   "dependencies": {
diff --git a/extensions/web-tracker/javascript/snippet.js b/extensions/web-tracker/javascript/src/snippet.js
similarity index 100%
rename from extensions/web-tracker/javascript/snippet.js
rename to extensions/web-tracker/javascript/src/snippet.js