Specify alt text in all images (#2434)
* Update publish-to-azure-webapp-using-vs.md
* Update google-logins.md
* Update working-with-sql.md
* Update microsoft-logins.md
* Update twitter-logins.md
* Update facebook-logins.md
* Update index.md
* Update accconfirm.md
* Update 2fa.md
* Update yeoman.md
* Update file-providers.md
* Update app-state.md
* Update localization.md
* Update middleware.md
* Update dependency-injection.md
* Update mvc.md
* Update webapi.md
* Update native-mobile-backend.md
* Update filters.md
* Update formatting.md
* Update dependency-injection.md
* Update adding-controller.md
* Update adding-model.md
* Update search.md
* Update controller-methods-views.md
* Update adding-view.md
* Update validation.md
* Update first-web-api.md
* Update web-api-help-pages-using-swagger.md
* Update your-first-mac-aspnet.md
* Update azure-continuous-deployment.md
* Update vsts-continuous-deployment.md
* Update dependency-injection.md
* Delete FBLogin2.PNG
* Delete pass1.PNG
* Delete pass2.PNG
* Add files via upload
* Update facebook-logins.md
* Update index.md
5e2118e1e6