Update README.md

Author: andcastillo

README.md

@@ -2,6 +2,29 @@
 
 Global Spectra Deconvolution + Peak optimizer
 
+##Paramters
+
+#### minMaxRatio=0.00025 (0-1)
+Threshold to determine if a given peak should be considered as a noise, bases on its relative height compared to the higest peak.
+
+#### broadRatio=0.00  (0-1)
+If broadRatio is higher than 0, then all the peaks which second derivative smaller than broadRatio*maxAbsSecondDerivative will be marked with the soft mask equal to true.
+
+#### noiseLevel=0 (-inf, inf)
+Noise threshold in spectrum units
+
+#### maxCriteria=true  [true||false]
+Peaks are local maximum(true) or minimum(false)
+
+#### smoothY=true [true||false]
+Select the peak intensities from a smoothed version of the independent variables?
+
+#### realTopDetection=false [true||false]
+Use a cuadratic optmizations with the peak and its 3 closest neighbors to determine the true x,y values of the peak?
+
+#### sgOptions={windowSize: 5, polynomial: 3}
+Savitzky-Golay paramters. windowSize should be odd; polynomial is the degree of the polinomial to use in the approximations. > 2
+
 ## Example
 ```
 var CC = require('chemcalc');