diff --git a/README.md b/README.md
index e8065e8..657a1c6 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,25 @@
 # Git-based Time Tracker
 
-TODO.
+Quick and dirty time tracker on git histories.
+
+Uses the simple heuristics that each commit takes precisely one hour of work.
+It will automatically trim commits below one hour if another commit occurred
+less than an hour ago.
+
+Usage:
+
+```
+python -m git_time_tracker
+```
+
+# Obligatory
+
+This tool reports:
+
+```
+Jmaa/git-time-tracker.git                    3 hours
+```
+
+And the ([Hamster](https://github.com/projecthamster/hamster)) manual time tracker reports:
+
+![](docs/obligatory-hamster.png)
diff --git a/git_time_tracker/__init__.py b/git_time_tracker/__init__.py
index bcd6d95..ae83fc2 100644
--- a/git_time_tracker/__init__.py
+++ b/git_time_tracker/__init__.py
@@ -60,9 +60,8 @@ ZERO_DURATION = datetime.timedelta(seconds = 0)
 HOUR = datetime.timedelta(hours = 1)
 
 def generate_report(samples: list[WorkSample]) -> Iterator[str]:
-    #SAMPLE_FILTER = {}
-    SAMPLE_FILTER = {'author:jonjmaa@gmail.com', 'author:jon.michael.aanes@secata.com'}
-    LABEL_FILTER = {'project'}
+    SAMPLE_FILTER = {}
+    LABEL_FILTER = {}
 
     # Time spent per label
     time_per_label: dict[str, datetime.timedelta] = {}
@@ -95,18 +94,18 @@ def generate_report(samples: list[WorkSample]) -> Iterator[str]:
 
         label_type, label = label_and_type.split(':', 1)
 
-        if label_type not in LABEL_FILTER:
+        if len(LABEL_FILTER) > 0 and label_type not in LABEL_FILTER:
             continue
 
         label_type = '' # TODO
 
-        yield f'  {label_type:8} {label:40}  {total_time / HOUR:-4.0f} hours\n'
+        yield f'  {label_type:8} {label:40}  {total_time / HOUR:-4.2f} hours\n'
         del label, total_time
 
     yield '-' * 66
     yield '\n'
 
-    yield '  {label_type:8} {label:40}  {hours:-4.0f} hours\n'.format(label_type='', label='TOTAL', hours = time_per_label[HIDDEN_LABEL_TOTAL] / HOUR)
+    yield '  {label_type:8} {label:40}  {hours:-4.0f} hours\n'.format(label_type='', label='TOTAL', hours = time_per_label.get(HIDDEN_LABEL_TOTAL, ZERO_DURATION) / HOUR)
 
 def main():
     logging.basicConfig()
@@ -127,4 +126,3 @@ def main():
 
     for t in generate_report(shared_time_stamps):
         sys.stdout.write(t)
-
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..64b1ada
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+GitPython
diff --git a/requirements_test.txt b/requirements_test.txt
new file mode 100644
index 0000000..e079f8a
--- /dev/null
+++ b/requirements_test.txt
@@ -0,0 +1 @@
+pytest
diff --git a/test/test_main.py b/test/test_main.py
new file mode 100644
index 0000000..4f5020c
--- /dev/null
+++ b/test/test_main.py
@@ -0,0 +1,4 @@
+import git_time_tracker
+
+def test_report_empty():
+    assert list(git_time_tracker.generate_report([]))