adding week2 examples

...xamples/Week2/RouterCookiesSessionsCode/Cookies/README.md

...deExamples/Week2/RouterCookiesSessionsCode/Cookies/app.js

...Week2/RouterCookiesSessionsCode/Cookies/package-lock.json

...ples/Week2/RouterCookiesSessionsCode/Cookies/package.json

...ureCodeExamples/Week2/RouterCookiesSessionsCode/README.md

...Examples/Week2/RouterCookiesSessionsCode/Router/README.md

...odeExamples/Week2/RouterCookiesSessionsCode/Router/app.js

.../Week2/RouterCookiesSessionsCode/Router/package-lock.json

...mples/Week2/RouterCookiesSessionsCode/Router/package.json

...eek2/RouterCookiesSessionsCode/Router/routes/buildings.js

...k2/RouterCookiesSessionsCode/Router/routes/schoolDorms.js

...amples/Week2/RouterCookiesSessionsCode/Sessions/README.md

...eExamples/Week2/RouterCookiesSessionsCode/Sessions/app.js

...eek2/RouterCookiesSessionsCode/Sessions/package-lock.json

...les/Week2/RouterCookiesSessionsCode/Sessions/package.json

...xamples/Week2/RouterCookiesSessionsCode/package-lock.json

LectureSlides/Week2/RouterCookiesSessions.pdf