Add lemonade recipe

src/lemonade.md

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+# Lemonade
+
+A simple lemonade recipe
+
+- ⏲️ Prep time: 30 min
+- 🍳 Cook time: 5 min
+- 🍽️ Servings:10
+
+## Ingredients
+
+- 1.75 cups white sugar
+- 8 cups water
+- 1.5 cups lemon juice
+
+## Directions
+
+1. In a small saucepan, combine sugar and 1 cup water. Bring to boil and stir to dissolve sugar. Allow to cool to room temperature, then cover and refigerate until chilled.
+2. Remove seeds from lemon juice, but leave pulp. In pitcher, stir together chilled syrup, lemon juice, and remaining 7 cups water.
+
+## Contribution
+- ifrendas - [github](https://github.com/ifrendas)