Adds some comments to what we're doing in the fetch_tester

fetch_tester.sh

@@ -2,6 +2,9 @@
 
 TESTERVERSION=0.0.1
 
+# Get the release information from the api for the specified version
 curl -X GET "https://git.p-epsilon.com/api/v1/repos/Deukhoofd/PokemonScriptTester/releases/tags/$TESTERVERSION" -H  "accept: application/json" |
+# Parse as json, select the url we need to download the file
  jq '.assets[] | select(.name=="PokemonScriptTester") .browser_download_url ' | 
+# Download the file at the given url
  xargs curl > PokemonScriptTester