Moved to google.golang.org/genproto/googleapis/api/annotations

Fixes #52

vendor/github.com/Masterminds/sprig/docs/reflection.md

@@ -0,0 +1,38 @@
+# Reflection Functions
+
+Sprig provides rudimentary reflection tools. These help advanced template
+developers understand the underlying Go type information for a particular value.
+
+Go has several primitive _kinds_, like `string`, `slice`, `int64`, and `bool`.
+
+Go has an open _type_ system that allows developers to create their own types.
+
+Sprig provides a set of functions for each.
+
+## Kind Functions
+
+There are two Kind functions: `kindOf` returns the kind of an object.
+
+```
+kindOf "hello"
+```
+
+The above would return `string`. For simple tests (like in `if` blocks), the
+`isKind` function will let you verify that a value is a particular kind:
+
+```
+kindIs "int" 123
+```
+
+The above will return `true`
+
+## Type Functions
+
+Types are slightly harder to work with, so there are three different functions:
+
+- `typeOf` returns the underlying type of a value: `typeOf $foo`
+- `typeIs` is like `kindIs`, but for types: `typeIs "*io.Buffer" $myVal`
+- `typeIsLike` works as `kindIs`, except that it also dereferences pointers.
+
+**Note:** None of these can test whether or not something implements a given
+interface, since doing so would require compiling the interface in ahead of time.