1.2.10 Nuevos ejercicios Alternativa condicional

Patches

• Changing publish script to pre publish only: 1c15baa
• Merge pull request #18 from Program-AR/publish-script: d53b748
• Bump grunt from 1.5.2 to 1.5.3: 82d891c
• Merge pull request #19 from Program-AR/dependabot/npm_and_yarn/grunt-1.5.3: 27949b0
• Nano exercises with copy paste driven development: 01c2c0a
• Adding Una fiesta arruinada exercise: 5684ccd
• Adding Redecorando fiestas exercise: 15c6b4b
• Fix balloons amount: 9a63d57
• Nano exercises refactor: cd554c9
• Merge pull request #20 from Program-AR/la-fiesta-arruinada: 03a1ad7
• Maria y las sandias 2: 030bcde
• Recolector de galaxias: ec75065
• Fixing recolector de galaxias height: 5209983
• El festin frutal: e641d10
• Desierto multifrutal: 5c09829
• Fixing maria y las sandias: ca3532b
• Merge pull request #21 from Program-AR/nano-exercises: 541bfbd
• Merge pull request #22 from Program-AR/new-exercises-part-2: e8d2356
• Merge pull request #23 from Program-AR/desierto-multifrutal: 5353b61
• Adding contributors: 526607c