Update README.md

Author: sigurd4

README.md

@@ -1,5 +1,5 @@
 A signal processing library in Rust, with the goal of being a decent alternative to Matlab's Signal Processing Toolbox and scipy.signal.
 
-At the moment this covers most of Octave's signal package and spcipy.signal's features. Lots of stuff in Matlab's Signal Processing Toolbox that still needs reverse engineering though.
+At the moment this covers most of Octave's signal package's features and scipy.signal's features. Lots of stuff in Matlab's Signal Processing Toolbox that still needs reverse engineering though. I'll make a list of missing features one day.
 
 I need to start actually writing the documentation on this thing. Hold on. I have exams first...