Fix test script help, add requirements.txt

scripts/gpm_retrieve/.gitignore

@@ -1,3 +1,2 @@
-requirements.txt
 venv
 mobileclient.cred

scripts/gpm_retrieve/requirements.txt

@@ -0,0 +1,3 @@
+gmusicapi
+argparse
+requests

server/test/test.sh

@@ -16,7 +16,7 @@ START_POSTGRES=
 START_POSTGRES_TESTCONTAINER=
 
 usage() {
-    cat << EOF | echo
+    echo "\
 This tool runs MuDBase's Jasmine tests. Different database back-ends can be selected (multiple is allowed too).
 Options:
      -s,--sqlite                          Use SQLite in memory for testing.
@@ -24,13 +24,17 @@ Options:
      -sp,--start-postgres                 Start its own Postgres Docker container for testing against.
      -spt,--start-postgres-testcontainer  Assume running in the sandervocke/postgres_node container. Spin up a PG process.
      any other option is passed on to Jasmine.
-EOF
+"
 }
 
 # Argument parsing
 PARAMS=""
 while (( "$#" )); do
   case "$1" in
+    -h|--help)
+      usage
+      exit 0
+      ;;
     -s|--sqlite)
       DO_SQLITE=1
       shift