updated ui added new features

third_party/codec2/README_cohpsk.md

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+# README_cohpsk.md
+
+## Introduction
+
+## Quickstart
+
+1. BER test in AWGN channel with just less that 2% average bit error rate:
+
+   ```
+    $ ./cohpsk_get_test_bits - 5600 | ./cohpsk_mod - - | ./ch - - --No -30 --Fs 7500 | ./cohpsk_demod - - | ./cohpsk_put_test_bits -
+    <snip>
+    SNR3k(dB):  3.41 C/No: 38.2 PAPR:  8.1 
+    BER: 0.017 Nbits: 5264 Nerrors: 92
+
+  ```
+
+2. Plot some of the demod internal states, used to chase down freq offset problemL
+
+   ```
+    $ cd build_linux/src
+    $ ./cohpsk_get_test_bits - 5600 | ./cohpsk_mod - -  | ./ch - - --No -40 -f -20 --Fs 7500 | ./cohpsk_demod -o cohpsk_demod.txt - - | ./cohpsk_put_test_bits -
+    $ cd ../../octave
+    $ octave --no-gui
+    $ cohpsk_demod_plot("../build_linux/src/cohpsk_demod.txt")    
+   ```
+
+3. Run Octave<-> tests
+
+   ```
+   $ cd ~/codec2/build_linux/unittest
+   $ ./tochpsk
+   $ cd ~/codec2/octave
+   $ octave --no-gui
+   octave> tcohpsk
+   ```
+   
+## References
+
+## C Code
+
+## Octave Scripts
+
+