Major step for build process

- updated to 0.4.0
- corrected license for npm
- update to gulp 4
- updated all dependencies
- new and removed packages, see `package.json`
- changed file structure, renamed `pages` to `screen` and new `data` 
folder
- complete change of `gulpfile.js` with similar output

.gitignore

@@ -1,3 +1,16 @@
+# hippie
+###################
+###################
+
+build/**
+reports/**
+source/art/*.*
+source/art/images/*.*
+source/art/sprites/
+!source/art/**/demo/
+
+
+
 # https://gist.github.com/octocat/9257657
 ###################
 ###################
@@ -181,14 +194,3 @@ typings/
 ###################
 .sass-cache/
 *.css.map
-
-
-
-# https://interaktionsweise.de/
-###################
-###################
-build/
-source/art/*.*
-source/art/images/*.*
-source/art/sprites/
-!source/art/**/demo/