To make the tab, I used this video : http://fr.youtube.com/watch?v=GtudG2y1Axk
Tuning : E (standard)
The strumming pattern is really simple so I let you listen to the song to learn it.


INTRO :
E||-------------------||
B||-------------------||
G||-------------------||
D||----4--------------||
A||----4--------------||
E||----2--------------||

Verse : 
"Standing on a dirty old rooftop..."
E||-------------------------------||
B||-------------------------------||
G||-----------------------9-------||
D||----4------2------10---9---9---|| x1
A||----4------2------12---7---9---||
E||----2------0------12-------7---||

"Come on Lewis, keep moving forward..."
E||------------------------------||
B||------------------------------||
G||-----------------------9------||
D||----4------2------10---9------|| x1
A||----4------2------10---7------||
E||----2------0------8-----------||

PRE-CHORUS
"Here we go, let me remind you..."
E||--------------------------||
B||---(4)----(6)-------------||
G||----4------6--------------||
D||----4------6--------------|| x1
A||----2------4--------------||
E||--------------------------||

CHORUS
"We're the kids of the future..."
E||-------------------------------------------------||
B||-------------------------------------------------||
G||---7-------7-------7---9-------------------------||
D||---7---7---7---7---7---9------4-4-4-4-4-4-4------|| x1
A||---5---7---5---7---5---7------4-4-4-4-4-4-4------||
E||-------5-------5--------------2-2-2-2-2-2-2------||


VERSE 2
"Bright lights, boy, look around you..."
E||-------------------------------||
B||-------------------------------||
G||-----------------------9-------||
D||----4------2------10---9---9---|| x1
A||----4------2------12---7---9---||
E||----2------0------12-------7---||

"Hot shot, the greatest adventure..."
E||------------------------------||
B||------------------------------||
G||-----------------------9------||
D||----4------2------10---9------|| x1
A||----4------2------10---7------||
E||----2------0------8-----------||

PRE-CHORUS
"Looking for a place you belong to..."
E||--------------------------||
B||---(4)----(6)-------------||
G||----4------6--------------||
D||----4------6--------------|| x1
A||----2------4--------------||
E||--------------------------||

CHORUS
"We're the kids of the future..."
E||-------------------------------------------------||
B||-------------------------------------------------||
G||---7-------7-------7---9-------------------------||
D||---7---7---7---7---7---9------4-4-4-4-4-4-4------|| x1
A||---5---7---5---7---5---7------4-4-4-4-4-4-4------||
E||-------5-------5--------------2-2-2-2-2-2-2------||

"Na Na Na Na Na Na Na..."
E||-------------------------------------------------||
B||-------------------------------------------------||
G||---------------7---------------7-----------------||
D||---4---7---2---7---4---7---2---7----------4------|| x1
A||---4---7---2---5---4---7---2---5----------4------||
E||---2---5---0-------2---5---0--------------2------||

VERSE 3
"Everyday we have fun me and Wilburd..."
E||-------------------------------||
B||-------------------------------||
G||-----------------------9-------||
D||----4------2------10---9---9---|| x1
A||----4------2------12---7---9---||
E||----2------0------12-------7---||

"Outside a new day is dawning..."
E||------------------------------||
B||------------------------------||
G||-----------------------9------||
D||----4------2------10---9------|| x1
A||----4------2------10---7------||
E||----2------0------8-----------||

PRE-CHORUS
"We'll save the future together..."
E||--------------------------||
B||---(4)----(6)-------------||
G||----4------6--------------||
D||----4------6--------------|| x1
A||----2------4--------------||
E||--------------------------||

CHORUS
"We're the kids of the future..."
E||-------------------------------------------------||
B||-------------------------------------------------||
G||---7-------7-------7---9-------------------------||
D||---7---7---7---7---7---9------4-4-4-4-4-4-4------|| x1
A||---5---7---5---7---5---7------4-4-4-4-4-4-4------||
E||-------5-------5--------------2-2-2-2-2-2-2------||

"Na Na Na Na Na Na Na..."
E||-------------------------------------------------||
B||-------------------------------------------------||
G||---------------7---------------7-----------------||
D||---4---7---2---7---4---7---2---7----------4------|| x1
A||---4---7---2---5---4---7---2---5----------4------||
E||---2---5---0-------2---5---0--------------2------||

END
"We're the kids..."
E||---------------||
B||---------------||
G||-------7---4---||
D||---4---7---4---|| x12
A||---4---5---2---||
E||---2-------0---||

I hope it's good ^^