Update 'README.md'

README.md

@@ -20,7 +20,7 @@ Data structure explained below:
 
    **behavior**.
 
-   **ts**:	time stamp in second
+   **ts**:	timestamp in second
 
    **pos_norm**: normalized position (0~1, circular) for each trial
 
@@ -41,6 +41,6 @@ Data structure explained below:
 
    **deconv**: deconvolved calcium signal (%), nSamples x nCells
 
-   **tt**: time stamp in second
+   **tt**: timestamp in second
 
    **avgstack**: mean stack image