Quick update to README suggesting version range
Quick update to README suggesting version range

Quick update to the README suggesting using `1.0.*` as the version of the library when installing.

philnash/laravel-twilio,rap2hpoutre/laravel-twilio,olsgreen/laravel5-twilio,aloha/laravel-twilio,tomschlick/laravel-twilio,abueldahab/laravel-twilio,nikolajlovenhardt/laravel-twilio,meditsimple/laravel-twilio