Ubuntu 18.04 snap issue with -c flag sh and nano

**Issue Label:**
* [x] Bug
* [ ] New feature
* [ ] Enhancement

**Description:**
When trying to run cryptowatch -c I am simply presented with the line
`sh: 1: nano: not found` in the terminal and immediately returned to the terminal prompt

### If its a bug make sure to include this section.
**OS and OS version:**
* [ ] Mac
* [ ] Linux 32 Bit
* [x] Linux 64 Bit
* [ ] Windows 32 Bit
* [ ] Windows 64 Bit

OS Version:
Ubuntu 18.04 LTS