Re-wrote analyzer block with Bartlett method

.gitignore

@@ -1,3 +1,4 @@
+.DS_Store
 __pycache__
 .tox
 python_adc_eval.egg-info

README.rst

@@ -6,33 +6,16 @@ A python-based ADC evaluation tool, suitable for standalone or library-based usa
 Details
 --------
 
-Package based on
+Inspired by
 `esynr3z/adc-eval <https://github.com/esynr3z/adc-eval>`__
 
-Tiny tools collection (Python
-`NumPy <https://numpy.org/>`__\ +\ `Matplotlib <https://matplotlib.org/>`__
-based) to do spectral analysis and calculate the key performance
-parameters of an ADC. Just collect some data from the ADC, specify basic
-ADC parameters and run analysis. See `example.ipynb <example.ipynb>`__
-(you will need `Jupyter Notebook <https://jupyter.org/>`__ to be
-installed).
+Performs spectral analysis of a dataset utilizing the Bartlett method. Calculates SFDR, SNDR, as well as harmonics.
 
 .. figure:: analyser.png
    :alt: analyser
 
    analyser
 
-References: - `Analog Devices MT-003 TUTORIAL “Understand SINAD, ENOB,
-SNR, THD, THD + N, and SFDR so You Don’t Get Lost in the Noise
-Floor” <https://www.analog.com/media/en/training-seminars/tutorials/MT-003.pdf>`__
-- `National Instruments Application Note 041 “The Fundamentals of
-FFT-Based Signal Analysis and
-Measurement” <http://www.sjsu.edu/people/burford.furman/docs/me120/FFT_tutorial_NI.pdf>`__
-
-Inspired by Linear Technology (now Analog Devices)
-`PScope <https://www.analog.com/en/technical-articles/pscope-basics.html>`__
-tool.
-
 
 USAGE
 =======
@@ -50,13 +33,19 @@ Given an array of values representing the output of an ADC, the spectrum can be
 
     import adc_eval
 
-    adc_eval.spectrum.analyze(<adc list>, <adc_bits>, <adc vref>, <adc fsamp>, window='hanning', no_plot=<True/False>)
-
+    adc_eval.spectrum.analyze(
+        <data>,
+        <fft bins>,
+        fs=<sample frequency>,
+        dr=<dynamicrange/vref>,
+        harmonics=<num of harmonics to find>,
+        leak=<adjacent bins to filter>,
+        window=<window type (rectangular/hanning)>,
+        no_plot=<True/False>,
+        yaxis=<"power"/"fullscale">
+    )
 
-|pscope| Image source: `Creating an ADC Using FPGA Resources WP -
-Lattice <https://www.latticesemi.com/-/media/LatticeSemi/Documents/WhitePapers/AG/CreatingAnADCUsingFPGAResources.ashx?document_id=36525>`__
 
-.. |pscope| image:: pscope.png
 .. |Lint| image:: https://github.com/fronzbot/python-adc-eval/workflows/Lint/badge.svg
    :target: https://github.com/fronzbot/python-adc-eval/actions?query=workflow%3ALint
 .. |PyPi Version| image:: https://img.shields.io/pypi/v/spithon.svg