fixed some typing mistakes

docs/README.md

@@ -1,3 +1,3 @@
 # Docs
 
-If you have created documenst to use with this lesson plan, please provide a link to them within this Readme file and upload the files in this folder if needed.
+If you have created documents to use with this lesson plan, please provide a link to them within this Readme file and upload the files in this folder if needed.

slides/docs/features.md

@@ -132,7 +132,7 @@ Slide type `clear` could also hide slide number.
 
 ### Types
 
-Types are changing slide’s look. You can set type by adding class to the main `slide`. There are few built-in types available in the theme, you could also describe custom types for each presention or add it to your theme.
+Types are changing slide’s look. You can set type by adding class to the main `slide`. There are few built-in types available in the theme, you could also describe custom types for each presentation or add it to your theme.
 
 #### White
 
@@ -305,7 +305,7 @@ If you want to add lines numbers use next construction:
 		<code>}<code>
 	</pre>
 
-When neccessary emphasize that code is commented, you need to use span element with `comment` class;
+When necessary emphasize that code is commented, you need to use span element with `comment` class;
 If you want to color part of code, wrap this part with `mark` to add yellow background and `mark` with `important` class to add red background;
 
 	<pre><code>function <mark>action()</mark> {
@@ -391,7 +391,7 @@ You can also combine classes for location in corners:
 
 #### Notes
 
-When neccessary to add some notes for slide, you may use `footer` class, that hide your notes at all time and show them when you hover to slide:
+When necessary to add some notes for slide, you may use `footer` class, that hide your notes at all time and show them when you hover to slide:
 
 	<section class="slide">
 		<p>Retro meh brunch aesthetic.</p>