Set default of threads command to 1 page and 40 threads (#80)

* Set default of threads command to 1 page and 40 threads

* Echo posts in a pager

rfd/posts.py

@@ -1,8 +1,32 @@
 # pylint: disable=old-style-class
-
+import os
+from colorama import Fore, Style
+from .scores import get_vote_color
 
 class Post:
     def __init__(self, body, score, user):
         self.body = body
         self.score = score
         self.user = user
+
+def get_terminal_width():
+    _, columns = os.popen("stty size", "r").read().split()
+    return int(columns)
+
+def generate_posts_output(posts):
+    output = ""
+    output += ("-" * get_terminal_width())
+    for post in posts:
+        output += (
+            " -"
+            + get_vote_color(post.score)
+            + Fore.RESET
+            + post.body
+            + Fore.YELLOW
+            + " ({})".format(post.user)
+        )
+        output += (Style.RESET_ALL)
+        output += "\n"
+        output += ("-" * get_terminal_width())
+        output += "\n"
+    return output