Allow overwriting imageContainer styles.

Closes #286

src/__snapshots__/index.test.js.snap

@@ -5,11 +5,11 @@ exports[`FastImage renders correctly. 1`] = `
   style={
     Array [
       Object {
-        "height": 44,
-        "width": 44,
+        "overflow": "hidden",
       },
       Object {
-        "overflow": "hidden",
+        "height": 44,
+        "width": 44,
       },
     ]
   }
@@ -43,11 +43,11 @@ exports[`Renders a normal Image when not passed a uri. 1`] = `
   style={
     Array [
       Object {
-        "height": 44,
-        "width": 44,
+        "overflow": "hidden",
       },
       Object {
-        "overflow": "hidden",
+        "height": 44,
+        "width": 44,
       },
     ]
   }

src/index.js

@@ -39,7 +39,7 @@ class FastImage extends Component {
         if (fallback) {
             return (
                 <View
-                    style={[style, styles.imageContainer]}
+                    style={[styles.imageContainer, style]}
                     ref={this.captureRef}
                 >
                     <FastImageView
@@ -58,7 +58,7 @@ class FastImage extends Component {
         }
 
         return (
-            <View style={[style, styles.imageContainer]} ref={this.captureRef}>
+            <View style={[styles.imageContainer, style]} ref={this.captureRef}>
                 <FastImageView
                     {...props}
                     style={StyleSheet.absoluteFill}