Check if REDDIT_TOKEN is set (#376)

devscripts/configure.ps1

@@ -1,2 +1,5 @@
+if (-not ([string]::IsNullOrEmpty($env:REDDIT_TOKEN)))
+{
     copy .\\bdfr\\default_config.cfg .\\test_config.cfg
     echo "`nuser_token = $env:REDDIT_TOKEN" >> ./test_config.cfg
+}

devscripts/configure.sh

@@ -1,2 +1,5 @@
+if [ ! -z "$REDDIT_TOKEN" ]
+then
     cp ./bdfr/default_config.cfg ./test_config.cfg
     echo -e "\nuser_token = $REDDIT_TOKEN" >> ./test_config.cfg
+fi