Start on the 'brick' api topics (#280)

* Start on the 'brick' api topics

* Add the delay to clear screen example

* Better output for clearsceen example

docs/reference/brick/clear-screen.md

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+# clear Screen
+
+Clear any text or numbers displayed on the screen. The screen will be blank.
+
+```sig
+brick.clearScreen();
+```
+
+## Example
+
+Clear the screen after displaying the message.
+
+```blocks
+brick.showString("This message will", 1);
+brick.showString("self-destruct in:", 2);
+brick.showString("seconds", 5);
+for (let i = 0; i < 10; i++) {
+    brick.showNumber(10 - i, 4);
+    loops.pause(1000);
+}
+brick.clearScreen();
+```

docs/reference/brick/print-ports.md

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+# print Ports
+
+Print the status of the ports on the screen.
+
+```sig
+brick.printPorts();
+```
+
+## Example
+
+Show the port status.
+
+```blocks
+brick.printPorts();
+```
+
+## See also
+
+[show string](/reference/brick/show-string), [show value](/reference/brick/show-value)

docs/reference/brick/show-image.md

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+# show Image
+
+Show an image on the brick's display.
+
+```sig
+brick.showImage(images.expressionsBigSmile);
+```
+You can choose one of several images to show on the display. 
+
+## Parameters
+
+**image**: A image to show on the brick's display. Use the image picker to choose the image you want to show.
+
+## Example
+
+Show a sleeping image on the brick's display.
+
+```blocks
+brick.showImage(image.expressionsZzz)
+```
+
+## See also
+
+[show image](/reference/brick/show-mood)

docs/reference/brick/show-mood.md

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+# show Mood
+
+Show a mood on the brick. A mood will have a image on the display along with a sound and solid or flashing light.
+
+```sig
+brick.showMood(moods.sleeping)
+```
+You can choose one of several moods to show on the display. Use a mood to help show what your @boardname@ is doing at the moment.
+
+## Parameters
+
+**mood**: A mood to show on the brick. Choose one of these moods:
+>* ``sleeping``
+* ``awake``
+* ``tired``
+* ``angry``
+* ``sad``
+* ``dizzy``
+* ``knockedOut``
+* ``middleLeft``
+* ``middleRight``
+* ``love``
+* ``winking``
+* ``neutral``
+
+
+## Example
+
+Show a ``winking`` mood on the brick.
+
+```blocks
+brick.showMood(moods.winking)
+```
+
+## See also
+
+[show image](/reference/brick/show-image)

docs/reference/brick/show-number.md

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+# show Number
+
+Show a number on the screen at the line you select.
+
+```sig
+brick.showNumber(0, 1);
+```
+
+## Parameters
+
+**value**: a [number](/types/number) to show on the brick's screen.
+**line**: The line number on the screen where the value is displayed. The line numbers for the screen start with line `1`.
+
+## Example
+
+Show the number `1000` on the screen.
+
+```blocks
+brick.showNumber(1000, 1);
+```
+
+## See also
+
+[show string](/reference/brick/show-string), [show value](/reference/brick/show-value)

docs/reference/brick/show-string.md

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+# show String
+
+Show some text on a the screen at the line you select.
+
+```sig
+brick.showString("Hello world", 1)
+```
+
+## Parameters
+
+* **text**: a [string](/types/string) to show on the brick's screen.
+* **line**: the line [number](/types/number) on the screen where the text is displayed. The line numbers for the screen start with line `1`.
+
+## Example
+
+Show a greeting on the screen. Then, respond with another message when ENTER is pressed.
+
+```blocks
+brick.showString("Hello, I dare you to press ENTER...", 1);
+brick.buttonEnter.onEvent(ButtonEvent.Click, function () {
+	brick.showString("Hey! Don't push my buttons.", 3);
+});
+```
+
+## See also
+
+[show number](/reference/brick/show-number)

docs/reference/brick/show-value.md

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+# show Value
+
+Show a name-value-pair on the screen at the line you select.
+
+```sig
+brick.showNumber("item", 0, 1);
+```
+
+Name-value-pairs are used to report data values to the screen. If you want to show the current temperature on the screen, you might use `"temp"` as the data name for the the value.
+
+## Parameters
+
+* **name**: a [string](/types/string) which is the name of the data value.
+**value**: a [number](/types/number) to show on the brick's screen.
+**line**: The line number on the screen where the value is displayed. The line numbers for the screen start with line `1`.
+
+## Example
+
+Show the current amount of ambient light detected by sensor 2.
+
+```blocks
+brick.buttonEnter.onEvent(ButtonEvent.Click, function () {
+    brick.showValue("color", sensors.color2.light(LightIntensityMode.Ambient), 1)
+})
+```
+
+## See also
+
+[show number](/reference/brick/show-number)