Get Title关键字：获取浏览器网页的title；该关键字不需要接收任何参数；
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示例：打开百度首页，获取百度首页的title
Open Browser http://www.baidu.com chrome
${text} Get Title //获取浏览器网页的title
log ${text} //打印
Close Browser
Get Title关键字：获取浏览器网页的title；该关键字不需要接收任何参数；
======================================================
示例：打开百度首页，获取百度首页的title
Open Browser http://www.baidu.com chrome
${text} Get Title //获取浏览器网页的title
log ${text} //打印
Close Browser