fix whitespace in plotlyoffline working directory + update version

Author: BRONSOLO

README.md

@@ -1,4 +1,4 @@
-## MATLAB PLOTLY API WRAPPER 2.2.0
+## MATLAB PLOTLY API WRAPPER 2.2.1
 
 ### NUTSHELL:
 

plotly/plotly_aux/plotly_version.m

@@ -1,3 +1,3 @@
 function version = plotly_version()
-    version = '2.2.0';
+    version = '2.2.1';
 end

plotly/plotly_offline_aux/plotlyoffline.m

@@ -78,6 +78,9 @@
     fprintf(file_id, offline_script); 
     fclose(file_id); 
 
+    % remove any whitespace from the plotly_offline_file path
+    plotly_offline_file = strrep(plotly_offline_file, ' ', '%20'); 
+    
     % return the local file url to be rendered in the browser
     response = ['file://' plotly_offline_file];