Update README.md

Line 9:
- Removed "you just need to" to make the sentence shorter and easier to read
- Added "in" to fix the typo: "this line [in] the terminal" (did the same thing for line 3)
- Made the same changes in line 3 (except for the "approx 30 minute" change since I'm not sure if this is the case for Ubuntu)
Line 3:
- Added "The" before "[The] installer might ask for your ..."
- Just to be clear, replaced the "it" in "it will take some time" with "the installation". This may clear up any ambiguities!
- Reworded the "Enjoy the text ... " sentence to make it make more logically structured
- Removed "take quite some time", replaced with "approximately 30 minutes" to shorten the sentence a bit
- Replaced "ask for" with "request", to make it one word rather than 2

Author: cobaltflames

README.md

@@ -1,12 +1,12 @@
 ## Script for OS X
 
-Copy and paste this line the Terminal and press Enter. Enjoy the text flying on the screen, it will take quite some time (approximately 30 minutes). Installer might ask for your administrator password. Grabbing a refreshing drink before starting is encouraged!
+Copy and paste this line in the Terminal and press Enter. The installation will take approximately 30 minutes, so enjoy the text flying on the screen. The installer might request your administrator password. Grabbing a refreshing drink before starting is encouraged!
 
     bash < <(curl -sL https://raw.github.com/railsgirls/installation-scripts/master/rails-install-osx.sh)
 
 ## Script for Ubuntu
 
-To install Ruby on Rails development environment you just need to copy and paste this line the Terminal and press Enter. Enjoy the text flying on the screen, it will take quite some time. Grabbing a refreshing drink before starting is encouraged.
+To install Ruby on Rails development environment, copy and paste this line in the Terminal and press Enter. The installation will take quite some time, so enjoy the text flying on the screen. Grabbing a refreshing drink before starting is encouraged!
 
     sudo apt-get install curl
     bash < <(curl -sL  https://raw.github.com/railsgirls/installation-scripts/master/rails-install-ubuntu.sh)