Make get script eaiser for helm versions to live side by side (helm3 etc)

Signed-off-by: Scott Rigby <scott@r6by.com>

scripts/get-helm-3

@@ -17,8 +17,7 @@
 # The install script is based off of the MIT-licensed script from glide,
 # the package manager for Go: https://github.com/Masterminds/glide.sh/blob/master/get
 
-PROJECT_NAME="helm"
-
+: ${PROJECT_NAME:="helm"}
 : ${USE_SUDO:="true"}
 : ${HELM_INSTALL_DIR:="/usr/local/bin"}
 
@@ -141,9 +140,9 @@ installFile() {
 
   mkdir -p "$HELM_TMP"
   tar xf "$HELM_TMP_FILE" -C "$HELM_TMP"
-  HELM_TMP_BIN="$HELM_TMP/$OS-$ARCH/$PROJECT_NAME"
+  HELM_TMP_BIN="$HELM_TMP/$OS-$ARCH/helm"
   echo "Preparing to install $PROJECT_NAME into ${HELM_INSTALL_DIR}"
-  runAsRoot cp "$HELM_TMP_BIN" "$HELM_INSTALL_DIR"
+  runAsRoot cp "$HELM_TMP_BIN" "$HELM_INSTALL_DIR/$PROJECT_NAME"
   echo "$PROJECT_NAME installed into $HELM_INSTALL_DIR/$PROJECT_NAME"
 }