Fixes #214

components/font_icon/FontIcon.jsx

@@ -5,7 +5,8 @@ const FontIcon = ({ children, className, value, ...other}) => {
   const classes = ClassNames('material-icons', className);
   return (
     <span className={classes} {...other} >
-      {value ? value : children}
+      {value}
+      {children}
     </span>
   );
 };

components/tooltip/style.scss

@@ -15,6 +15,7 @@
   max-width: $tooltip-max-width;
   padding: $tooltip-padding;
   margin: $tooltip-margin 0;
+  font-family: Roboto, sans-serif;
   font-size: $tooltip-font-size;
   font-weight: $font-weight-bold;
   line-height: $font-size-small;