add test data and readme

Author: zhangt58

readdpa_tdp/README.md

@@ -0,0 +1,19 @@
+#### readdpa_tdp
+
+Refactored dpa reader and manipulator by C++.
+
+additional information provides:
+* peak current
+* bunching factor at nth harmonic
+
+Usage:
+```shell
+Usage: ./readdpa_tdp file1 file2 total_slice total_charge xlamds zsep nharm
+	file1: 		dpa file to be read
+	file2: 		current file
+	total_slice: 	total slice number of dpa file
+	total_charge: 	total bunch charge in [pC]
+	xlamds: 	wavelength [nm]
+	zsep  : 	slice spacing in xlamds
+	nharm : 	for bunching factor calculation
+```

readdpa_tdp/readdpa_tdp

@@ -1,4 +1,4 @@
-#!/usr/bin/octave -qf
+#!/usr/local/bin/octave -qf
 
 %--------------------------------------------------------------------
 % This script is used to extraing slices out of the dpa binary file