Improve command help for train command (#436)

Found explanations here: https://github.com/mkmarek/forex.analytics/blob/7628a98685c3b6bbedf4a4db3ddf8ae6035fdc90/include/TradingSystem.h#L33

Author: Froelund

commands/train.js

@@ -63,9 +63,9 @@ module.exports = function container (get, set, clear) {
       .option('--end_training <timestamp>', 'end training at timestamp')
       .option('--days_training <days>', 'set duration of training dataset by day count', Number, c.days)
       .option('--days_test <days>', 'set duration of test dataset to use with simulation, appended AFTER the training dataset (default: 0)', Number)
-      .option('--populationCount <value>', 'population count (default: ' + fa_getTrainOptions().populationCount + ')', Number)
+      .option('--populationCount <value>', 'population count within one generation (default: ' + fa_getTrainOptions().populationCount + ')', Number)
       .option('--generationCount <value>', 'generation count (default: ' + fa_getTrainOptions().generationCount + ')', Number)
-      .option('--selectionAmount <value>', 'selection amount (default: ' + fa_getTrainOptions().selectionAmount + ')', Number)
+      .option('--selectionAmount <value>', 'how many chromosomes shall be selected from the old generation when constructing a new one (default: ' + fa_getTrainOptions().selectionAmount + ')', Number)
       .option('--leafValueMutationProbability <value>', 'leaf value mutation probability (default: ' + fa_getTrainOptions().leafValueMutationProbability + ')', Number)
       .option('--leafSignMutationProbability <value>', 'leaf sign mutation probability (default: ' + fa_getTrainOptions().leafSignMutationProbability + ')', Number)
       .option('--logicalNodeMutationProbability <value>', 'logical node mutation probability (default: ' + fa_getTrainOptions().logicalNodeMutationProbability + ')', Number)