Revert "Use jekyll-assets"

This reverts commit 9062937951.

_sass/partials/_colors.scss

@@ -0,0 +1,10 @@
+// I got the blues, man.
+// 1 --> 5, lightest --> darkest.
+
+$color-blue-1: #E8F8FF;
+$color-blue-2: #B4DCED;
+$color-blue-3: #91C9E8;
+$color-blue-4: #67B8DE;
+$color-blue-5: #3399CC;
+$color-white: #ffffff;
+$color-slate: #5E5E5E;

_sass/partials/_defaults.scss

@@ -0,0 +1,6 @@
+$base-font-family: 'Droid Sans', sans-serif;
+$base-font-size:   18px;
+$small-font-size:  $base-font-size * 0.875;
+$base-line-height: 1.5;
+$spacing-unit:     40px;
+

_sass/partials/_helpers.scss

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+%clearfix {
+  &:after {
+    content: "";
+    display: table;
+    clear: both;
+   }
+}