Rearrange all the docs to allow for a docs/major.minor/ setup

docs/4.0/examples/album/album.css

@@ -0,0 +1,58 @@
+body {
+  min-height: 75rem; /* Can be removed; just added for demo purposes */
+}
+
+.navbar {
+  margin-bottom: 0;
+}
+
+.jumbotron {
+  padding-top: 6rem;
+  padding-bottom: 6rem;
+  margin-bottom: 0;
+  background-color: #fff;
+}
+
+.jumbotron p:last-child {
+  margin-bottom: 0;
+}
+
+.jumbotron-heading {
+  font-weight: 300;
+}
+
+.jumbotron .container {
+  max-width: 40rem;
+}
+
+.album {
+  min-height: 50rem; /* Can be removed; just added for demo purposes */
+  padding-top: 3rem;
+  padding-bottom: 3rem;
+  background-color: #f7f7f7;
+}
+
+.card {
+  float: left;
+  width: 33.333%;
+  padding: .75rem;
+  margin-bottom: 2rem;
+  border: 0;
+}
+
+.card > img {
+  margin-bottom: .75rem;
+}
+
+.card-text {
+  font-size: 85%;
+}
+
+footer {
+  padding-top: 3rem;
+  padding-bottom: 3rem;
+}
+
+footer p {
+  margin-bottom: .25rem;
+}