calculate_custom_sentiment: Predicts the sentiment of sentences
Description
This function loads text and words of positive and negative sentiment supplied externally as paramater and calculates sentiment of each sentence. It classifies
sentences into 6 categories: Positive, Negative, Very Positive, Very Negative
Sarcasm and Neutral.
A flag variable whose value if 1 denotes appending of passed positive and negative words with existing words.By
default, this method will work with supplied positive and negative words only.
# NOT RUN {calculate_custom_sentiment("This is good",c("good"),c("bad"),1)
calculate_custom_sentiment(c("This is good","This is bad"),c("good"),c("bad"),0)
# }