add npmlog style preset (#135)

README.md

@@ -89,6 +89,10 @@ which means that every "err" string will be in red and every line containing "er
 
 _New presets are very welcome. If you don't like default or you would like to share yours, please create PR with json file._
 
+Available presets:
+- default
+- npmlog
+
 ### Running behind nginx
 
 Using the `--url-path` option `frontail` can run behind nginx with the example configuration

preset/npmlog.json

@@ -0,0 +1,15 @@
+{
+  "words": {
+    "verb": "color: blue; background-color: black;",
+    "info": "color: green;",
+    "http": "color: green; background-color: black;",
+    "WARN": "color: black; background-color: yellow; font-style: normal;",
+    "error": "color: red;",
+    "ERR!": "color: red; background-color: black;"
+  },
+  "lines": {
+    "WARN": "font-style: italic;",
+    "ERR!": "font-weight: bold;"
+  }
+}
+