add node-man signature (#63)

node-man · Widdershin · commit 00d74ff04269 · 2018-04-16T19:55:25.000+12:00
diff --git a/SIGNATURES b/SIGNATURES
@@ -63,3 +63,4 @@ neoromantique be19eb6fc5a89205e0ff00d627992f81d1648bee
 craiga 2a7455c1bc7c515f8c3fdb218e43c201d13e8e1e
 pimmen 56ede56dfcc6b1912efa7cab41e5503306feb0a4
 richin d9fe21fa1a8ff45241283a9d310e64306f5ec9a6
+node-man 5ff2f6eee13257ac1480407dbe281337eb3c1ef8
