Refactor main application structure; move main logic to __main__.py and add example configuration file

hasspy.install

@@ -0,0 +1,35 @@
+# This is a default template for a post-install scriptlet.
+# Uncomment only required functions and remove any functions
+# you don't need (and this header).
+
+## arg 1:  the new package version
+#pre_install() {
+	# do something here
+#}
+
+## arg 1:  the new package version
+#post_install() {
+	# do something here
+#}
+
+## arg 1:  the new package version
+## arg 2:  the old package version
+#pre_upgrade() {
+	# do something here
+#}
+
+## arg 1:  the new package version
+## arg 2:  the old package version
+#post_upgrade() {
+	# do something here
+#}
+
+## arg 1:  the old package version
+#pre_remove() {
+	# do something here
+#}
+
+## arg 1:  the old package version
+#post_remove() {
+	# do something here
+#}