feat(Flow): Type definition improvements (#222)

* feat(types): Improved flow types

* feat(modules): Explicit return values, toColorString flow errors corrected.

.documentation.json

@@ -85,11 +85,10 @@
       "name": "Types"
     },
     "AnimationProperty",
-    "ButtonState",
     "FontFaceConfiguration",
     "HslColor",
     "HslaColor",
-    "InputState",
+    "InteractionState",
     "PointingDirection",
     "RadialGradientConfiguration",
     "Ratio",

.flowconfig

@@ -1,10 +1,9 @@
 [ignore]
 .*/node_modules/.*
+.*/lib/.*
 
 [include]
 
 [libs]
 
 [options]
-
-suppress_comment=.*\\$FlowIgnoreNextLine

README.md

@@ -135,18 +135,18 @@ In the documentation you will see examples using [object spread properties](http
   <summary>Types</summary>
   <ul>
     <li><a href="http://polished.js.org/docs/#animationproperty">AnimationProperty</a></li>
-    <li><a href="http://polished.js.org/docs/#buttonstate">ButtonState</a></li>
     <li><a href="http://polished.js.org/docs/#fontfaceconfiguration">FontFaceConfiguration</a></li>
     <li><a href="http://polished.js.org/docs/#hslcolor">HslColor</a></li>
     <li><a href="http://polished.js.org/docs/#hslacolor">HslaColor</a></li>
-    <li><a href="http://polished.js.org/docs/#inputstate">InputState</a></li>
+    <li><a href="http://polished.js.org/docs/#interactionstate">InteractionState</a></li>
     <li><a href="http://polished.js.org/docs/#pointingdirection">PointingDirection</a></li>
     <li><a href="http://polished.js.org/docs/#radialgradientconfiguration">RadialGradientConfiguration</a></li>
     <li><a href="http://polished.js.org/docs/#ratio">Ratio</a></li>
     <li><a href="http://polished.js.org/docs/#rgbacolor">RgbaColor</a></li>
     <li><a href="http://polished.js.org/docs/#rgbcolor">RgbColor</a></li>
     <li><a href="http://polished.js.org/docs/#timingfunction">TimingFunction</a></li>
     <li><a href="http://polished.js.org/docs/#tocolorstring">toColorString</a></li>
+    <li><a href="http://polished.js.org/docs/#modularscaleratio">ModularScaleRatio</a></li>
   </ul>
 </details>
 <!-- INJECT DOCS END -->