diff --git a/README.md b/README.md
index 097daaa..a2cd2e9 100644
--- a/README.md
+++ b/README.md
@@ -38,19 +38,32 @@ module.exports = function(config) {
       // main function
       args: ['app.test_runner.run']
     },
+    
+    // singleRun set to false does not work!
+    singleRun: true
   })
 }
 ```
 
-## Example
+## Usage
 
 ```clojure
 (ns app.test-runner
-  (:require [jx.reporter.karma :refer-macros [run-tests]]
+  (:require [jx.reporter.karma :refer-macros [run-tests run-all-tests]]
             [foo.bar-test]))
 
 (enable-console-print!)
 
+; runs all tests in all namespaces
+(defn ^:export run-all [karma]
+  (run-all-tests karma))
+
+; runs all tests in all namespaces - only namespaces with names matching
+; the regular expression will be tested
+(defn ^:export run-all-regex [karma]
+  (run-all-tests karma #".*-test$"))
+
+; runs all tests in the given namespaces
 (defn ^:export run [karma]
   (run-tests karma 'foo.bar-test))
 ```
@@ -58,7 +71,7 @@ module.exports = function(config) {
 To execute tests from command line:
 
 ```bash
-./node_modules/.bin/karma start karma.conf.js --single-run
+./node_modules/.bin/karma start
 ```
 
 To execute tests from REPL (will use `:cljs.test/default` reporter):
diff --git a/src/jx/reporter/karma.clj b/src/jx/reporter/karma.clj
index a5a1eeb..3f2717b 100644
--- a/src/jx/reporter/karma.clj
+++ b/src/jx/reporter/karma.clj
@@ -3,20 +3,27 @@
             [cljs.analyzer :as ana]
             [cljs.analyzer.api :as api]))
 
-(defmacro tests-count [& namespaces]
+(defmacro tests-count
+  [& namespaces]
   `(+ ~@(map (fn [[quote ns]]
                (count
                  (filter #(true? (get-in % [1 :test]))
                          (cljs.analyzer.api/ns-publics ns))))
              namespaces)))
 
-(defmacro run-tests [karma & namespaces]
+(defmacro run-tests
+  "Runs all tests in the given namespaces."
+  [karma & namespaces]
   (if (nil? karma)
     `(cljs.test/run-tests ~@namespaces)
     `(do (jx.reporter.karma/start ~karma (tests-count ~@namespaces))
         (cljs.test/run-tests (cljs.test/empty-env ::karma) ~@namespaces))))
 
 (defmacro run-all-tests
+  "Runs all tests in all namespaces.
+  Optional argument is a regular expression; only namespaces with
+  names matching the regular expression (with re-matches) will be
+  tested."
   ([karma] `(run-all-tests ~karma nil))
   ([karma re]
    (if (nil? karma)