Added install links

README

@@ -58,8 +58,9 @@ where words with a specific label are hidden. Output can be saved as poster, or
 run: `make output/reading_structure/index.html`
 
 Specific Dependencies:
-* nltk: nltk.tokenize.punkt, ne_chunk, pos_tag, word_tokenize, sentiment.vader
+* nltk (http://www.nltk.org/install.html)
-* weasyprint
+* nltk.tokenize.punkt, ne_chunk, pos_tag, word_tokenize, sentiment.vader (https://www.nltk.org/data.html)
-* jinja2
+* weasyprint (http://weasyprint.readthedocs.io/en/latest/install.html)
+* jinja2 (http://jinja.pocoo.org/docs/2.10/intro/#installation)
 * font: PT Sans (os font https://www.fontsquirrel.com/fonts/pt-serif)
 * font: Ubuntu Mono (os font https://www.fontsquirrel.com/fonts/ubuntu-mono)