Revert "Styles are added to the snapshot as valid HTML in the <style>…

… element. (#149)" (#151)

This reverts commit 9c519dd.

README.md

@@ -120,11 +120,9 @@ When we rerun the test, the output is different: the style rules are included in
 - Snapshot
 + Received
 
-+<style>
 +.c0 {
 +  color: green;
 +}
-+</style>
 +
  <button
 -  className="sc-bdVaJa rOCEJ"
@@ -136,11 +134,9 @@ This is the resulting snapshot:
 
 ```js
 exports[`it works 1`] = `
-<style>
 .c0 {
   color: green;
 }
-</style>
 
 <button
   className="c0"
@@ -166,7 +162,6 @@ Thanks to Jest Styled Components, Jest is now able to provide the exact informat
 -  color: green;
 +  color: blue;
  }
- </style>
 
  <button
    className="c0"

src/styleSheetSerializer.js

@@ -15,10 +15,7 @@ const getNodes = (node, nodes = []) => {
   return nodes
 }
 
-const markNodes = nodes =>
-  nodes.forEach(node => {
-    node[KEY] = true
-  })
+const markNodes = nodes => nodes.forEach(node => (node[KEY] = true))
 
 const getClassNames = nodes =>
   nodes.reduce((classNames, node) => {
@@ -107,7 +104,7 @@ const styleSheetSerializer = {
     const style = getStyle(classNames)
     const code = print(val)
 
-    let result = style ? `<style>\n${style}\n</style>\n\n${code}` : code
+    let result = `${style}${style ? '\n\n' : ''}${code}`
     result = replaceClassNames(result, classNames, style)
     result = replaceHashes(result, hashes)