Allow floats in the slider component and update docs

test/spec/lib/clay-config.js

@@ -112,7 +112,8 @@ describe('ClayConfig', function() {
           {label: 'label-1', value: 'cb-1'},
           {label: 'label-2', value: 'cb-2'},
           {label: 'label-2', value: 'cb-3'}
-        ]}
+        ]},
+        {type: 'slider', appKey: 'test5', step: 0.05, defaultValue: 12.5}
       ];
       var settings = {
         test2: 'val-2'
@@ -121,10 +122,11 @@ describe('ClayConfig', function() {
       var clayConfig = fixtures.clayConfig(config, true, true, settings);
 
       assert.deepEqual(clayConfig.serialize(), {
-        test1: 'default val',
-        test2: 'val-2',
-        test3: false,
-        test4: []
+        test1: {value: 'default val'},
+        test2: {value: 'val-2'},
+        test3: {value: false},
+        test4: {value: []},
+        test5: {value: 12.5, precision: 2}
       });
 
       clayConfig.getItemByAppKey('test1').set('val-1');
@@ -132,17 +134,29 @@ describe('ClayConfig', function() {
       clayConfig.getItemByAppKey('test4').set(['cb-1', 'cb-3']);
 
       assert.deepEqual(clayConfig.serialize(), {
-        test1: 'val-1',
-        test2: 'val-2',
-        test3: true,
-        test4: ['cb-1', 'cb-3']
+        test1: {value: 'val-1'},
+        test2: {value: 'val-2'},
+        test3: {value: true},
+        test4: {value: ['cb-1', 'cb-3']},
+        test5: {value: 12.5, precision: 2}
       });
 
       // make sure the result of serialize() can actually be fed back in to
       // a new instance of ClayConfig
+      var clay = fixtures.clay(config);
+      var response = encodeURIComponent(JSON.stringify(clayConfig.serialize()));
+      clay.getSettings(response);
+      var loadedSettings = JSON.parse(localStorage.getItem('clay-settings'));
+
+      assert.deepEqual(loadedSettings, {
+        test1: 'val-1',
+        test2: 'val-2',
+        test3: true,
+        test4: ['cb-1', 'cb-3'],
+        test5: 12.5
+      });
       assert.doesNotThrow(function() {
-        settings = clayConfig.serialize();
-        fixtures.clayConfig(config, true, true, settings);
+        fixtures.clayConfig(config, true, true, loadedSettings);
       });
     });
   });