Update examples

examples/GroovyScript/Reservoirs.groovy

@@ -0,0 +1,37 @@
+//Register an power tier
+var power = mods.tweakedMods.PowerTier.recipeBuilder()
+        .capacity(5555555)
+        .rft(5)
+        .register()
+
+/*
+This method will register a reservoir with the chance to drain fluid from the chunk.
+If drainChance is set to 0.25 it will have a 25% chance to drain from the chunk
+If drainChance is set to 0.5 it will have a 50% chance to drain from the chunk
+If drainChance is set to 1 it will have a 100% chance to drain from the chunk, its the same as registering it normally
+*/
+
+//Register an gas reservoir
+mods.tweakedMods.GasReservoir.recipeBuilder()
+        .name("GroovyGasReservoir")
+        .fluid(gas("hydrogen"))
+        .weight(80000)
+        .powerTier(power)
+        .minSize(50)
+        .maxSize(1500)
+        .pumpSpeed(10)
+        .replenishRate(5)
+        .register()
+
+//Remove an gas reservoir
+mods.tweakedMods.GasReservoir.remove("Some_Name")
+
+//Modify an reservoir
+mods.tweakedMods.GasReservoir.get("lava").toBuilder()
+        .drainChance(0.8).maxSize(Integer.MAX_VALUE).register()
+
+/*
+Groovy compat is located in 'io.github.srdjanv.tweakedpetroleum.common.compat.groovy'
+
+Also see https://cleanroommc.com/groovy-script/
+*/