Fixed a couple of typos in c3s2

Author: tomclose

_sessions/c1s2/1_using_git.md

@@ -6,21 +6,7 @@ Git is a version control system. It allows you to keep the entire history of you
 
 ### Setting up a git repo
 
-Git works on a folder level. To set up a folder to work with git you need to navigate to that folder in the command line and run.
-
-    $ git init
-
-To see what this has done do:
-
-    $ ls -a
-
-The `-a` is a flag which tells the `ls` command to show hidden files and folders. You should see a folder called `.git` in the results. If you want you could move into this folder, and have a look around (and then move out again).
-
-    $ cd .git
-    $ ls
-    $ cd ..
-
-All the data to allow git to version control your code will be stored inside this hidden folder. If you ever want to 'un-version-control' your code all you have to do is delete this folder.
+Git works on a folder level. To set up a folder to work with git you need to open up the github app and select `File > Add Local Repository ...`. You then need to select the folder you want to control with git.
 
 ### Excluding some files
 

_sessions/c3s2/1_conditionals.md

@@ -12,11 +12,11 @@ else
 end
 {% endhighlight %}
 
-If the code within the `if` block will only be run if the statement is true. If the statement is false, the code in the `else` block will be run instead.
+The code within the `if` block will only be run if the statement is true. If the statement is false, the code in the `else` block will be run instead.
 
 ### Comparisons
 
-There are some basic comparisons that we will be useful when using if statments
+There are some basic comparisons that will be useful when using if statments
 
 Symbol | Meaning
 ---- | ----

_sessions/c3s2/2_post_requests.md

@@ -41,4 +41,5 @@ Note that, like the words matched in the url, the value of the `user_name` field
 2. Clone down your fork of the repository onto your laptop.
 3. Open the `sinatra_c3s2` project in Sublime Text and have a read through `app.rb`. See if you can predict what the app will do.
 4. Run the app from the command line (`ruby app.rb`), to see if you were right.
+5. (Optional) Add the line `raise params.inspect` right at the top of the post block. Restart the app and see what happens.
 {% endexercise %}

_sessions/c3s2/3_deploying.md

@@ -107,7 +107,7 @@ Deploy your `sinatra_c3s2` app to Heroku:
 2. Add your work (and new `Gemfile.lock`) to your repository:
 
         $ git add --all
-        $ git commit -m "Added Gemfile.lock"
+        $ git commit -m 'Added Gemfile.lock'
 
 3. Create a new heroku app:
 

_sessions/c3s2/4_templates.md

@@ -37,7 +37,7 @@ end
 
 The line `erb :form` tells sinatra to look for a file called `form.erb` in a folder called `views`. It then processes that file using the `erb` (embedded ruby) templating language and returns the result to the user.
 
-The `form.erb` above isn't very interesting: it is jsut a static template and doesn't have any ruby embedded in it. Let's look at a slightly better example:
+The `form.erb` above isn't very interesting: it is just a static template and doesn't have any ruby embedded in it. Let's look at a slightly better example:
 
 {% highlight ruby %}
 # in app.rb
@@ -50,6 +50,7 @@ post '/' do
   @age  = params[:user_age]
 
   erb :welcome
+end
 {% endhighlight %}
 
 {% highlight html %}