Fix layout filename

src/components/Layout.js

@@ -0,0 +1,71 @@
+import React from 'react'
+import { Link } from 'gatsby'
+
+import { rhythm, scale } from '../utils/typography'
+
+class Layout extends React.Component {
+  render() {
+    const { location, children } = this.props
+    const rootPath = `${__PATH_PREFIX__}/`
+    let header
+
+    if (location.pathname === rootPath) {
+      header = (
+        <h1
+          style={{
+            ...scale(1.5),
+            marginBottom: rhythm(1.5),
+            marginTop: 0,
+          }}
+        >
+          <Link
+            style={{
+              boxShadow: 'none',
+              textDecoration: 'none',
+              color: 'inherit',
+            }}
+            to={'/'}
+          >
+            Gatsby Starter Blog
+          </Link>
+        </h1>
+      )
+    } else {
+      header = (
+        <h3
+          style={{
+            fontFamily: 'Montserrat, sans-serif',
+            marginTop: 0,
+            marginBottom: rhythm(-1),
+          }}
+        >
+          <Link
+            style={{
+              boxShadow: 'none',
+              textDecoration: 'none',
+              color: 'inherit',
+            }}
+            to={'/'}
+          >
+            Gatsby Starter Blog
+          </Link>
+        </h3>
+      )
+    }
+    return (
+      <div
+        style={{
+          marginLeft: 'auto',
+          marginRight: 'auto',
+          maxWidth: rhythm(24),
+          padding: `${rhythm(1.5)} ${rhythm(3 / 4)}`,
+        }}
+      >
+        {header}
+        {children}
+      </div>
+    )
+  }
+}
+
+export default Layout