doc/go1.5.txt: bytes.Buffer.Cap, template.Option

Change-Id: I8e2177ffdb4b75e7f3687109311306fc02fcc8e3
Reviewed-on: https://go-review.googlesource.com/8468Reviewed-by: Rob Pike <r@golang.org>

doc/go1.5.txt

@@ -19,6 +19,7 @@ API additions and behavior changes:
 
 archive/zip: add (*Writer).SetOffset method (https://golang.org/cl/7445)
 bufio: add Reader.Discard (https://golang.org/cl/2260)
+bytes: add Buffer.Cap (https://golang.org/cl/8342)
 crypto/cipher: clarify what will happen if len(src) != len(dst) for the Stream interface. (https://golang.org/cl/1754)
 crypto/elliptic: add Name field to CurveParams struct (https://golang.org/cl/2133)
 crypto/tls: change default minimum version to TLS 1.0. (https://golang.org/cl/1791)
@@ -41,6 +42,7 @@ strings: add Compare(x, y string) int, for symmetry with bytes.Compare (https://
 syscall: Add Foreground and Pgid to SysProcAttr (https://golang.org/cl/5130)
 syscall: add missing Syscall9 for darwin/amd64 (https://golang.org/cl/6555)
 testing/quick: support generation of arrays (https://golang.org/cl/3865)
+text/template: add Options method (https://golang.org/cl/8462)
 
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