Changed gitignore files, added SocialSent to git

.gitignore

ADA/.gitignore

ADA/SA/data/SocialSent/2000.tsv

...ata/SocialSent/subreddit_sentiment_lexicons/2007scape.tsv

ADA/SA/data/SocialSent/subreddit_sentiment_lexicons/3DS.tsv

...SA/data/SocialSent/subreddit_sentiment_lexicons/4chan.tsv

.../data/SocialSent/subreddit_sentiment_lexicons/ACTrade.tsv

...SocialSent/subreddit_sentiment_lexicons/AdviceAnimals.tsv

...lSent/subreddit_sentiment_lexicons/Anarcho_Capitalism.tsv

.../data/SocialSent/subreddit_sentiment_lexicons/Android.tsv

...A/data/SocialSent/subreddit_sentiment_lexicons/AskMen.tsv

...data/SocialSent/subreddit_sentiment_lexicons/AskWomen.tsv

...ata/SocialSent/subreddit_sentiment_lexicons/BabyBumps.tsv

...ta/SocialSent/subreddit_sentiment_lexicons/BigBrother.tsv

.../data/SocialSent/subreddit_sentiment_lexicons/Bitcoin.tsv

ADA/SA/data/SocialSent/subreddit_sentiment_lexicons/CFB.tsv

...lSent/subreddit_sentiment_lexicons/CasualConversation.tsv

...Sent/subreddit_sentiment_lexicons/CasualPokemonTrades.tsv

.../SocialSent/subreddit_sentiment_lexicons/Christianity.tsv

...data/SocialSent/subreddit_sentiment_lexicons/Civcraft.tsv