implement Player movement

client/public/build/main.bundle.js

client/public/build/main.bundle.js.map

client/public/css/style.css

client/public/images/map.png

client/public/index.html

client/src/Player.js

client/src/main.js

node_modules/.bin/acorn

node_modules/.bin/acorn.cmd

node_modules/.bin/acorn.ps1

node_modules/.bin/ansi-html

node_modules/.bin/ansi-html.cmd

node_modules/.bin/ansi-html.ps1

node_modules/.bin/babel

node_modules/.bin/babel-external-helpers

node_modules/.bin/babel-external-helpers.cmd

node_modules/.bin/babel-external-helpers.ps1

node_modules/.bin/babel.cmd

node_modules/.bin/babel.ps1

node_modules/.bin/browserslist