tidy up, add base responsive nav, update readme

assets/styles/base/_base.scss

@@ -1,54 +1,51 @@
 body {
-    color: $base-colour;
-    font-family: $base-font-family;
-    @include font-size($base-font-size);
-    line-height: $base-line-height;
-    -webkit-text-size-adjust: none;    
+  color: $base-colour;
+  font-family: $base-font-family;
+  line-height: $base-line-height;
+  text-size-adjust: none;
+  @include font-size($base-font-size);
 }
 
-h1, 
-h2, 
-h3, 
-h4, 
-h5, 
-h6, 
-p, 
-hr, 
-ul, 
+h1,
+h2,
+h3,
+h4,
+h5,
+h6,
+p,
+hr,
+ul,
 ol,
 dl,
 address {
-    margin-bottom: $base-spacing-unit;
+  margin-bottom: $base-spacing-unit;
 }
 
-
 /**
  * Basic styles for links
  */
-
 a {
-    color: $brand-colour;
-    text-decoration: none;
-    &:hover {
-        color: $base-colour;
-        text-decoration: underline;
-    }
+  color: $brand-colour;
+  text-decoration: none;
+
+  &:hover {
+    color: $base-colour;
+    text-decoration: underline;
+  }
 }
 
-a[href^="tel"]{
-    color: inherit;
-    text-decoration: none;
-    font-family: inherit;
-    font-size: inherit;
-    font-style: inherit;
+a[href^="tel"] {
+  font-size: inherit;
+  font-family: inherit;
+  color: inherit;
+  text-decoration: none;
+  font-style: inherit;
 }
 
-
 /**
- * Rulers
+ * Rules
  */
-
 hr {
-    background-color: $base-colour;
-    height: 1px;
-}
+  height: 1px;
+  background-color: $base-colour;
+}