Merge branch 'feature/mongo_2.6.5' into feature/mongo_2.6.5_documentSource

lib/pipeline/expressions/index.js

@@ -31,6 +31,7 @@ module.exports = {
 	SubtractExpression: require("./SubtractExpression.js"),
 	ToLowerExpression: require("./ToLowerExpression.js"),
 	ToUpperExpression: require("./ToUpperExpression.js"),
+	VariadicExpressionT: require("./VariadicExpressionT.js"),
 	WeekExpression: require("./WeekExpression.js"),
 	YearExpression: require("./YearExpression.js")
 };