Prepare new release (#25)

* Depend on purescript-specs v4

* Use spago and specs v4 in README

README.md

@@ -9,11 +9,9 @@ It only works for NodeJS environments, currently.
 ## Usage
 
 ```bash
-bower install --save-dev purescript-spec-discovery
+spago install spec-discovery
 ```
 
-For `purescript-spec` `>= 4.0.0`:
-
 ```purescript
 module Test.Main where
 
@@ -30,23 +28,6 @@ main = launchAff_ do
   runSpec [consoleReporter] specs
 ```
 
-For older versions of `purescript-spec`:
-
-```purescript
-module Test.Main where
-
-import Prelude
-import Effect (Effect)
-import Test.Spec.Discovery (discover)
-import Test.Spec.Reporter.Console (consoleReporter)
-import Test.Spec.Runner (run)
-
-main :: Effect Unit
-main = do
-  specs <- discover """My\.Package\..*Spec"""
-  run [consoleReporter] specs
-```
-
 All modules that match the regular expression, **and have a definition
 `spec :: Spec Unit`**, will be included and run.
 

bower.json

@@ -15,7 +15,7 @@
     "purescript-prelude": "^4.0.0",
     "purescript-effect": "^2.0.0",
     "purescript-arrays": "^5.0.0",
-    "purescript-spec": "#>=3.1.0 <5.0.0",
+    "purescript-spec": "^4.0.0",
     "purescript-node-fs": "^5.0.0"
   }
 }