{dist,distmv,sample,stat}: add missing copyright headers and package docs

dist/general.go

@@ -1,3 +1,8 @@
+// Copyright ©2014 The gonum Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package dist provides univariate random distribution types.
 package dist
 
 // Parameter represents a parameter of a probability distribution

distmv/general.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// Package distmv provides multivariate random distribution types.
 package distmv
 
 var (

distmv/normal_test.go

@@ -1,3 +1,7 @@
+// Copyright ©2015 The gonum Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package distmv
 
 import (

sample/example_burnin_test.go

@@ -1,3 +1,7 @@
+// Copyright ©2015 The gonum Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package sample
 
 import "github.com/gonum/stat/dist"

sample/example_rate_test.go

@@ -1,3 +1,7 @@
+// Copyright ©2015 The gonum Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package sample
 
 import "github.com/gonum/stat/dist"

stat.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// Package stat provides generalized statistical functions.
 package stat
 
 import (