Custom Search Engine

# Description: ----------------- This add-on allows users to define their own custom search engines and use it from address bar of the browser. You can save the custom engine details to a file and also load it from there. It allows easy sharing of custom defined engines too. You can also make use of multiple search engines in one go. To use multi-search feature type "ms key1,key2,key3 <text>". For detailed information please review information at home page/support page url (due to a chrome store policy needed to truncate the description) - https://rsins.github.io/ravi-firefox-custom-search-engines/custom-search-browser-add-on-readme # Permissions Required: ------------------------ * storage - Save and load Preferences * raw.githubusercontent.com - Load "popular search engines" from https://raw.githubusercontent.com/rsins/ravi-firefox-custom-search-engines/master/SampleCustomEngines/PopularSearchEngines.txt