Update README docs on how to set up locally

Update .env.example

.env.example

@@ -1,4 +1,4 @@
-SLACK_TOKEN=slacktoken
-SLACK_VERIFICATION_TOKEN=slacksecret
+SLACK_TOKEN=
+SLACK_VERIFICATION_TOKEN=
 PORT=3000
-DEV_SUBDOMAIN=yourname
+DEV_SUBDOMAIN=janefoster

README.md

@@ -1,5 +1,5 @@
-# Greetbot
-Greetbot is a Slackbot app built with [ExpressJS](https://expressjs.com/) to be used with the [Codebuddies](https://www.codebuddies.org) open Slack community. Greetbot helps us welcome and onboard new members and provide valuable coding resources.
+# greetbot
+greetbot is a Slack app built with [ExpressJS](https://expressjs.com/) to be used with the [Codebuddies](https://www.codebuddies.org) open Slack community. greetbot helps us welcome and onboard new members and provide valuable coding resources.
 
 ## Contributing
 ### Code of Conduct
@@ -8,7 +8,26 @@ This is an open source project and we welcome all developers of all skill levels
 **TL;DR:** Be nice, we are all here to learn together.
 
 ### Development
-Please refer to our [wiki](https://github.com/codebuddies/greetbot/wiki) for guides on getting set up, development workflows and testing.
+Development contribution requires that you have your own Slack workspace as your sandbox for local development purposes. For instructions on how to make your own, see Slack's [tutorial](https://get.slack.help/hc/en-us/articles/206845317-Create-a-Slack-workspace).
+
+#### Getting Started
+1. Install dependencies with NPM
+```bash
+  npm install
+```
+
+2. Create an `.env` file by following the same structure as `.env.example`. Change the `DEV_SUBDOMAIN` variable to your name without spaces. For example, if your name is Jane Fonda, then the `DEV_SUBDOMAIN` value should be `janefonda`.
+
+3. Run Development mode
+```bash
+  npm run start:dev
+```
+
+#### Installing greetbot in your sandbox workspace
+We have created a guide on how to set up your local version of greetbot in your Slack workspace. Read it [here](https://github.com/codebuddies/greetbot/wiki/Setup-Greetbot-in-your-Slack-Workspace).
+
+#### Putting it all together :tada: 
+Now that you have followed the tutorials and guides linked above to a T (right??), greetbot should work in your slack workspace. Try sending a slash command by typing `/welcome test`. greetbot should send you private message with a welcome message.
 
 ### Feature Requests / Ideas / Issues
 For bugs or other issues, feel free to file an [Issue](https://github.com/codebuddies/greetbot/issues).