updated readme

README.md

@@ -1,10 +1,10 @@
-This code package implements the density uncertainty quantification methodology for BOS outlined in:
+This code package implements the density integration and uncertainty quantification methodology for BOS outlined in:
 
 Rajendran, L. K., Zhang, J., Bhattacharya, S., Bane, S., & Vlachos, P. (2019). Uncertainty quantification in
 density estimation from background oriented schlieren (BOS) measurements.Measurement Science and
 Technology. doi:10.1088/1361-6501/ab60c8
 
 Please cite the above paper if you use this code package for your work.
 
-sample_script.py is a sample python script that loads the sample dataset in 'sample-data.mat' and calls the uncertainty quantification function to perform the calculations.
+sample_script.py is a sample python script that loads the sample dataset in 'sample-data.mat' and calls the density integration + uncertainty quantification function to perform the calculations.
 It saves the result to 'sample-result.mat' and a figure to 'sample-result.png'