added room input modal

components/room-input.js

@@ -0,0 +1,46 @@
+import React, {Component} from 'react';
+import {Modal, Text, TouchableHighlight, View, Alert} from 'react-native';
+
+class RoomInput extends Component {
+  state = {
+    modalVisible: false,
+  };
+
+  setModalVisible(visible) {
+    this.setState({modalVisible: visible});
+  }
+
+  render() {
+    return (
+      <View style={{marginTop: 22}}>
+        <Modal
+          animationType="slide"
+          transparent={false}
+          visible={this.state.modalVisible}
+          onRequestClose={() => {
+            Alert.alert('Modal has been closed.');
+          }}>
+          <View style={{marginTop: 22}}>
+            <View>
+              <Text>Hello World!</Text>
+
+              <TouchableHighlight
+                onPress={() => {
+                  this.setModalVisible(!this.state.modalVisible);
+                }}>
+                <Text>Hide Modal</Text>W
+              </TouchableHighlight>
+            </View>
+          </View>
+        </Modal>
+
+        <TouchableHighlight
+          onPress={() => {
+            this.setModalVisible(true);
+          }}>
+          <Text>Show Modal</Text>
+        </TouchableHighlight>
+      </View>
+    );
+  }
+}