☕ add a dependency-injection examples folder for the next release and some improvements

Former-commit-id: 040168afb7caf808618f7da5e68ae8eb01cb7170

_benchmarks/_internal/README.md

@@ -14,10 +14,17 @@ Internal selected benchmarks between modified features across different versions
 
 Measures handler factory time.
 
+```sh
+$ cd v12.1.x
+$ go test -run=NONE --bench=. -count=5 --benchmem > di_test.txt
+$ cd ../vNext
+$ go test -run=NONE --bench=. -count=5 --benchmem > di_test.txt
+```
+
 | Name    | Ops | Ns/op | B/op | Allocs/op |
 |---------|:------|:--------|:--------|----|
-| vNext   | 181726 | 6631  | 1544 | 17 |
-| v12.1.x |  96001 | 12604 | 976  | 26 |
+| vNext   | 184512 | 6607  | 1544 | 17 |
+| v12.1.x |  95974 | 12653 | 976  | 26 |
 
 It accepts a dynamic path parameter and a JSON request. It returns a JSON response. Fires 500000 requests with 125 concurrent connections.
 

_benchmarks/_internal/vNext/di.go

@@ -1,8 +1,6 @@
 package main
 
-import (
-	"github.com/kataras/iris/v12"
-)
+import "github.com/kataras/iris/v12"
 
 type (
 	testInput struct {

_benchmarks/_internal/vNext/go.mod

@@ -4,4 +4,7 @@ go 1.14
 
 replace github.com/kataras/iris/v12 => C:/mygopath/src/github.com/kataras/iris
 
-require github.com/kataras/iris/v12 v12.1.8
+require (
+	github.com/kataras/iris/v12 v12.1.8
+	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
+)