Organizing nvm install tests better.

test/slow/nvm install/install from binary

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+set -e
+. ../../nvm.sh
+
+VERSION=v0.10.7
+
+# Remove the stuff we're clobbering.
+[ -e ../../$VERSION ] && rm -R ../../$VERSION
+
+# Install from binary
+nvm install $VERSION
+
+# Check
+[ -d ../../$VERSION ]
+nvm run $VERSION --version | grep $VERSION