some readme updating

README.md

@@ -37,19 +37,30 @@ Pre-dependency:
 >
 > If you need more info look `:h gopher.nvim`
 
+**Take a look at default options**
+
 ```lua
 require("gopher").setup {
   commands = {
     go = "go",
     gomodifytags = "gomodifytags",
-    gotests = "~/go/bin/gotests", -- also you can set custom command path
+    gotests = "gotests",
+    impl = "impl",
+    iferr = "iferr",
+    dlv = "dlv",
   },
   gotests = {
+    -- gotests doesn't have template named "default" so this plugin uses "default" to set the default template
     template = "default",
+    -- path to a directory containing custom test code templates
+    template_dir = nil,
+    -- switch table tests from using slice to map (with test name for the key)
+    -- works only with gotests installed from develop branch
+    named = false,
   },
   gotag = {
-    transform = "pascalcase"
+    transform = "snakecase",
-  }
+  },
 }
 ```