docs+samples: documenting a project

samples/project/src/characters.rb

@@ -0,0 +1,8 @@
+require 'squib'
+
+Squib::Deck.new do
+  background color: :white
+  text str: "Built at #{Time.now}"
+  svg file: 'robot-golem.svg'
+  save_png prefix: 'character_'
+end

samples/project/src/skills.rb

@@ -0,0 +1,7 @@
+require 'squib'
+
+Squib::Deck.new do
+  background color: :white
+  text str: "Built at #{Time.now}"
+  save_png prefix: 'skill_'
+end