agrego ejemplos de filter
Revert "agrego ejemplos de filter"

This reverts commit 2e56f9643331c952b06a17050d2c0540a8500be9.
Revert "agrego ejemplo de ng click"

This reverts commit bc770f9d391f97f8f7961362adfe1971f1ad4961.
Revert "agrego ejemplo de ng show"

This reverts commit 6d2ac16c44546362c8ee1f0ac6acaea9d55f773c.
Revert "agrego ejemplo de directives"

This reverts commit 12124d2c1c25200929b84be1d9ec2b27901d940f.