Updated install-command and other tweaks to readme
Updated install-command and other tweaks to readme

ronco/ember-cli-document-title,ssendev/ember-cli-document-title,lucas-clemente/ember-cli-document-title,kimroen/ember-cli-document-title,ronco/ember-cli-document-title,abulrim/ember-cli-document-title,ssendev/ember-cli-document-title,kimroen/ember-cli-document-title,abulrim/ember-cli-document-title,lucas-clemente/ember-cli-document-title