rel(1.5.1): Update VERSIONS [skip ci]

Author: oesteban

.versions.json

@@ -1,5 +1,10 @@
 {
 	"flagged": {
-		"1.0.0": "Deprecated / too old"
+		"1.0.0": "Deprecated / too old",
+		"1.5.0rc1": "Nipype unstable",
+		"1.5.0rc2": "Nipype unstable",
+		"1.5.0": "Nipype unstable",
+		"1.5.1rc1": "Nipype unstable",
+		"1.5.1rc2": "Nipype unstable"
 	}
-}
+}