bug: eliminating any combinations of $1 or $2 from any environment variables on retrieve.

[stevehebert]

Getting live environment variables that contain a $1 or $2 in a legitimate string is dropped from the variable

This combination can happen in a legitimate environment variable (like a password)

The line that causes the drop is here

gotenv/gotenv.go

Line 167 in 27d3877

val = rq.ReplaceAllString(val, "$2")

Trying to understand why this would be getting dropped in this way.

[luisdavim]

#16 should fix this as long as you use single quotes