Merge pull request #32 from decentralized-identity/readme/wsl2+nvm-ve…

…rsion

add dependencies/pre-setup step and WSL2 link

readme.md

@@ -16,6 +16,7 @@ Spec-Up is a technical specification development tool that enables you to create
 
 Installing Spec-Up is easy peasy lemon squeezy:
 
+0. Node.JS, i.e. `nvm` and its package manager `npm`, are required to run spec-up. WSL2 users should look [here](https://docs.microsoft.com/en-us/windows/dev-environment/javascript/nodejs-on-wsl#install-nvm-nodejs-and-npm) for specific instructions. 
 1. Run `npm install spec-up` in the root directory of the repo to install all dependencies.
 2. Create a `specs.json` file **in the root folder of your repository** to specify configuration values used in the generation of your spec documents. The values in your `specs.json` file include things like where your spec's markdown files are located, where to output the generated spec document, and various metadata values used in rendering, such as the title, logo, and repo links for each of your specs. The following are the required/optional fields supported in the `specs.json` config file:
 
@@ -137,3 +138,13 @@ Additionally, some editors may prefer to keep an immutable archive in a system l
 ```
 **Specification Status:** Draft V0.1 (snapshotted and archived on [web.archive.org](https://web.archive.org/web/20211206215823/https://identity.foundation/waci-presentation-exchange/))
 ```
+
+## Troubleshooting
+
+- WSL2 users are recommended to use the `bash` option rather than `PowerShell` in the terminal of Visual Studio Code.
+- Some users have reported problems using spec-up with node versions 15+; to pin to an older version, simple run:
+```
+nvm install 14
+nvm use 14
+npm i npm@6.14.16 -g
+```