changed step names

step1-07/src/components/TodoHeader.tsx

@@ -0,0 +1,21 @@
+import React from "react";
+
+export class TodoHeader extends React.Component<any, any> {
+  render() {
+    const { filter, inputValue, onInputChange, onTodoSubmit, onFilterClick } = this.props;
+    return (
+      <div>
+        <h1>todos</h1>
+        <input value={inputValue} onChange={onInputChange} className="textfield" />
+        <button onClick={onTodoSubmit} className="button add">Add</button>
+        <div className="filter">
+          <button onClick={() => onFilterClick('all')} className={filter == "all" ? "active" : ""}>all</button>
+          <button onClick={() => onFilterClick('active')} className={filter == "active" ? "active" : ""}>active</button>
+          <button onClick={() => onFilterClick('completed')} className={filter == "completed" ? "active" : ""}>
+            completed
+          </button>
+        </div>
+      </div>
+    );
+  }
+}