diff --git a/.travis.yml b/.travis.yml
index ee5a765..3145019 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,14 +1,10 @@
+dist: xenial
 language: python
 python:
   - "2.7"
   - "3.4"
   - "3.5"
-  - "3.5-dev"  # 3.5 development branch
   - "3.6"
-  - "3.6-dev"  # 3.6 development branch
-# scipy is not supported
-#  - "3.7-dev"  # 3.7 development branch
-#  - "nightly"
 
 before_install:
   - sudo apt-get -qq update
@@ -16,7 +12,16 @@ before_install:
 
 install:
   - pip install -r requirements.txt
-  - python setup.py develop
+  - pip install .
 
 script:
   - python setup.py test
+
+deploy:
+  provider: pypi
+  user: yuma-m
+  password:
+    secure: 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
+  on:
+    python: 3.6
+    tags: true
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb3cb5f..0547f82 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 0.1.5
+
+- Support triangle wave.
+    - Contributor: @AntiMatterAMA
+
 ## 0.1.4
 
 - Fix channels of Player class from 2 to 1 to play proper sound.
diff --git a/README.md b/README.md
index 0200a00..33df8b6 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ $ pip install pyaudio
 
 ## Supported OS
 
-- macOS Sierra
+- macOS 10.12 and above
 - Ubuntu 16.04
 
 ## Supported versions
diff --git a/example/play_440hz.py b/example/play_440hz.py
index 7211f9e..af245f5 100755
--- a/example/play_440hz.py
+++ b/example/play_440hz.py
@@ -20,6 +20,11 @@ def main():
     player.play_wave(synthesizer.generate_constant_wave(440.0, 3.0))
     time.sleep(0.5)
 
+    print("play triangle wave")
+    synthesizer = Synthesizer(osc1_waveform=Waveform.triangle, osc1_volume=0.8, use_osc2=False)
+    player.play_wave(synthesizer.generate_constant_wave(440.0, 3.0))
+    time.sleep(0.5)
+
     print("play synthesized wave 1")
     synthesizer = Synthesizer(
         osc1_waveform=Waveform.sawtooth, osc1_volume=1.0,
diff --git a/setup.py b/setup.py
index faf5c2e..ee932cb 100644
--- a/setup.py
+++ b/setup.py
@@ -1,12 +1,5 @@
 from setuptools import setup, find_packages
-version = '0.1.4'
-
-try:
-    import pypandoc
-    read_md = lambda f: pypandoc.convert(f, 'rst')
-except ImportError:
-    print("warning: pypandoc module not found, could not convert Markdown to RST")
-    read_md = lambda f: open(f, 'r').read()
+version = '0.1.5'
 
 setup(
     name='synthesizer',
@@ -28,7 +21,8 @@
     packages=find_packages(exclude=['test']),
     include_package_data=True,
     zip_safe=True,
-    long_description=read_md('README.md'),
+    long_description=open('README.md').read(),
+    long_description_content_type='text/markdown',
     test_suite='nose.collector',
     install_requires=[
         'enum34>=1.1.6',
diff --git a/synthesizer/synthesizer.py b/synthesizer/synthesizer.py
index 7ff6679..04f3605 100644
--- a/synthesizer/synthesizer.py
+++ b/synthesizer/synthesizer.py
@@ -45,8 +45,10 @@ def generate_wave(self, phases):
         phases = np.copy(phases) * self._freq_transpose
         return self._volume * self._wave_func(phases)
     
-    def gen_triang(self,t,width=0.5):
-	    return scipy.signal.sawtooth(t,width)
+    @staticmethod
+    def gen_triang(t, width=0.5):
+        return scipy.signal.sawtooth(t, width)
+
 
 class Synthesizer(object):
     u""" Virtual analog synthesizer object
diff --git a/test/test_synthesizer.py b/test/test_synthesizer.py
index 2c632af..5b22c46 100644
--- a/test/test_synthesizer.py
+++ b/test/test_synthesizer.py
@@ -31,3 +31,12 @@ def test_square_wave():
     assert_almost_equal(wave.max(), 1.0, places=3)
     assert_almost_equal(wave.min(), -1.0, places=3)
     assert_almost_equal(wave.mean(), 0.0, places=3)
+
+
+def test_triangle_wave():
+    synthesizer = Synthesizer(osc1_waveform=Waveform.triangle, osc1_volume=1.0, use_osc2=False, rate=RATE)
+    wave = synthesizer.generate_constant_wave(440.0, 1.0)
+    eq_(wave.size, RATE)
+    assert_almost_equal(wave.max(), 1.0, places=3)
+    assert_almost_equal(wave.min(), -1.0, places=3)
+    assert_almost_equal(wave.mean(), 0.0, places=3)