TBR: reader: Replace V23_ROOT with JIRI_ROOT everywhere.

MultiPart: 20/23

Change-Id: I772116a97b95279eda6886d92bc3ba26c1a56314
diff --git a/Makefile b/Makefile
index 8c13c44..1979a27 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 MAKEFLAGS += --warn-undefined-variables
 PATH := node_modules/.bin:$(PATH)
-PATH := $(PATH):$(V23_ROOT)/third_party/cout/node/bin
+PATH := $(PATH):$(JIRI_ROOT)/third_party/cout/node/bin
 SHELL := /bin/bash
 
 .SHELLFLAGS := -eu -o pipefail -c
@@ -24,9 +24,9 @@
 	@npm install
 	# SEE: http://git.io/vGkKV
 	@rm -rf ./node_modules/{vanadium,syncbase}
-	@cd "$(V23_ROOT)/release/javascript/core" && npm link
+	@cd "$(JIRI_ROOT)/release/javascript/core" && npm link
 	@npm link vanadium
-	@cd "$(V23_ROOT)/release/javascript/syncbase" && make node_modules && npm link
+	@cd "$(JIRI_ROOT)/release/javascript/syncbase" && make node_modules && npm link
 	@npm link syncbase
 	@touch $@
 
diff --git a/README.md b/README.md
index 70aad54..6401461 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,8 @@
 
 ## Dependencies
 
-If you have a `$V23_ROOT` setup you can install Node.js from
-`$V23_ROOT/third_party` by running:
+If you have a `$JIRI_ROOT` setup you can install Node.js from
+`$JIRI_ROOT/third_party` by running:
 
     v23 profile install nodejs