Fix caps and add highlighting for embedded code-blocks

Ignore.md

@@ -1,56 +1,75 @@
 ## Ignoring errors
 
-To ignore a shellcheck error, you can do one of three things:
+To ignore a ShellCheck error, you can do one of three things:
 
 ### Ignoring one specific instance in a file
 
 Use a [[directive]] to disable a certain instance:
 
+```sh
 hexToAscii() {
   # shellcheck disable=SC2059
   printf "\x$1"
 }
+```
 
 You can pass multiple errors to [[directive]]:
 
+```sh
 # shellcheck disable=SC2116,SC2086
 hash=$(echo ${hash})    # trim spaces
+```
 
 ### Ignoring errors in one specific run
 
-Use a `-e` flag to disable a specific error when running shellcheck:
+Use a `-e` flag to disable a specific error when running `shellcheck`:
 
+```console
 $ shellcheck -e SC2059 myscript
+```
 
-### Ignoring one or more type of error forever
+### Ignoring one or more types of errors forever
 
 As of v0.7.0 you can create a file `.shellcheckrc` in your home directory (or your project's base directory), and add `disable` directives to it:
 
-    $ cat ~/.shellcheckrc
-    disable=SC2059
+```shellcheckrc
+# ~/.shellcheckrc
+disable=SC2059,SC2034 # Disable individual error codes
+disable=SC1090-SC1100 # Disable a range of error codes
+```
 
 In earlier versions, you can set the environment variable `SHELLCHECK_OPTS` in your `.bashrc`, `/etc/profile` or equivalent:
 
+```sh
 export SHELLCHECK_OPTS="-e SC2059 -e SC2034 -e SC1090"
+```
 
-### Ignoring one or more type of error with shellcheck in Docker
+### Ignoring one or more types of error with ShellCheck in Docker
 
 Pass it to Docker directly:
 
+```sh
 docker run -e SHELLCHECK_OPTS="-e SC2059 -e SC2034 -e SC1090" -v "$PWD:/mnt" koalaman/shellcheck myscript
+```
 
 Optionally you can set the `SHELLCHECK_OPTS` variable in shell:
 
+```sh
 export SHELLCHECK_OPTS="-e SC2059 -e SC2034 -e SC1090"
+```
 
 and then pass it to Docker:
 
+```sh
 docker run -e SHELLCHECK_OPTS="$SHELLCHECK_OPTS" -v "$PWD:/mnt" koalaman/shellcheck myscript
+```
 
 ### Ignoring all instances in a file (0.4.4+)
 Add a [[directive]] at the top of the file:
 
+```sh
 #!/bin/sh
 # shellcheck disable=SC2059
+```
 
-Note that the [[directive]] must be on the first line after the shebang with versions before 0.4.6. As of 0.4.6 comments and whitespace are allowed before filewide directives.
+Note that the [[directive]] must be on the first line after the shebang with versions before 0.4.6. As of 0.4.6 comments and whitespace are allowed before file-wide directives.