Merge pull request #22 from jsoref/spelling

Spelling

README.md

@@ -11,15 +11,15 @@ If you using Basecamp3 and Slack, try this!
   * Please edit secrets.yml or your environment variables.
   * About Slack
     * ENV["SLACK_INCOMING_WEBHOOK_URL"]
-      * Please add new incoming webhook to your slack channnel. And set the url to env
+      * Please add new incoming webhook to your slack channel. And set the url to env
     * icon_emoji
       * Please add `:basecamp:` emoji to your slack team
   * About Basecamp3
     * This function is **Optional** function.
     * ENV["BASECAMP_INTEGRATION"]
       * If you want to use this func. please set `true`
     * Require register your app to https://launchpad.37signals.com/integrations
-      * You can get these valiables.
+      * You can get these variables.
       * ENV["BASECAMP_CLIENT_SECRET"]
       * ENV["BASECAMP_AUTH_REDIRECT_URI"]
     * You can know account id at this url `https://3.basecamp.com/$ACCOUNT_ID/projects`